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Kosher (koh-shur) — lit., Fitting, suitable; the status of being fit to eat according to Jewish law
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Kashrut: Lanolin
Lanolin Not Kosher
Lanolin is not kosher .
Kashrut: Modified Substances
Modified Non-Kosher
A non- kosher substance becomes kosher once it is modified and no...
Kashrut: Nutritional Supplements
Kashrut and Non-Kosher Nutritional Supplements
If kosher supplements are not available or are not as good as the non-...
Kashrut: Substances Not Swallowed
Non-Kosher Mouthwash
You may use non- kosher mouthwash, even if you may swallow some...
Kashrut: Dairy/Meat: Stovetop
Stovetop Surfaces: Kosher Status
A stovetop surface is likely to be non- kosher due to previous spills...
MARI'T AYIN
Eating Kosher at a Non-Kosher Event
You may eat a kosher catered meal at an otherwise non- kosher event...
Introduction to Kosher/Kashrut
Introduction to Kosher/Kashrut
The human soul can achieve its goals when the body’s physical...
What Is Kosher?
What Is Kosher?
By Sara-Malka (Diane) Laderman Kosher (Hebrew for...
How To Prepare Food in a Non-Kosher Kitchen
How to Prepare Food in a Non-Kosher Kitchen
BAKING IN NON-KOSHER OVEN An oven that has not been used...
Taste (Ta'am) Transfer: Spicy/Charif: Pressure
Taste (Ta'am) Transfer: Spicy/Charif: Non-Kosher Utensils
A non- kosher fork, knife, or spoon may not be used to eat or cut...
Kashrut: Terms
Kosher
Kosher means fitting (food that is fitting to eat).
River as Mikva
Rivers as Kosher Mikva
Rivers are only kosher mikva s when spring-fed. A river is a kosher...
Kashrut: Eggs
Kashrut: Eggs: Hard-Boiling in Non-Kosher Pot
Do not eat hard-boiled eggs cooked in a non- kosher pot.  
Non-Spicy/Non-Charif Soaking: 24 Hours or More
Non-Spicy/Non-Charif Non-Kosher Soaking: Makes Kosher Food Non-Kosher
Any non-spicy/non- charif , non- kosher food that soaks (in water or...
Kashrut: Fish: Buying in Non-Kosher Store
To Buy Fresh Kosher Fish in Non-Kosher Store
To buy fresh  kosher  fish in a non- kosher  store:...
Kashering: Dishwashers
Kashering a Dishwasher from Non-Kosher to Kosher
Dishwashers may generally not be kashered except when made of...
Kashrut: Alcoholic Beverages
Beer
All beer in the USA is kosher and does not need supervision. Many...
Kashrut: Alcoholic Beverages
Drinks from the Five Grains Owned by a Jew during Passover
All beverages that contain alcohol made from any of the five grains...
Kashrut: Alcoholic Beverages
Fermented Fruit Juices
Kosher supervision is recommended for fermented non-grape fruit juices...
Introduction to Shavuot
Introduction to Shavuot
Shavuot ( Yom HaBikurim in the Torah) celebrates and commemorates...
Introduction to Weddings and Marriage
Introduction to Weddings and Marriage
The purpose of the  rabbi  at a wedding is to ensure...
Jewish Festivals: Bottles
Jewish Festivals: Opening Metal Bottle Caps
You may not open metal bottle caps on Jewish festivals if a metal...
Kashrut: Alcoholic Beverages
Liquers
Many liquers are kosher even without supervision, but many are not...
Kashrut: Alcoholic Beverages
Pure Alcohol
Pure alcohol is kosher if not derived from any grapes or any other...
Tzitzit: How To Check
Tzitzit: For What To Check
Torn In checking tzitzit, determine: Are any loops...
Kashrut: Alcoholic Beverages
Whiskies
Almost all whiskies are kosher , but check the source to be certain.
Kashrut: Alcoholic Beverages
Wine
The principal difference between kosher wine (or grape juice) and non-...
Kashrut: Bread
Bread
Bread made in not-kosher bakeries can be assumed to be kosher ONLY if:...
Dating
Checking Jewish Lineage
If there may be any question about the Jewish lineage of a...
Dating
Dating only People You May Marry
You should date only people whom you may marry.  Examples...
Seder Plate
Five Foods of the Seder Plate
Seder plate consists of five foods:  Shank Bone Shank...
Kashrut: Dairy/Meat: Cutting Boards
Kashrut: Dairy/Meat: Cutting Boards
Situation You cut a spicy/ charif item of one gender on a...
Kashrut: Dairy/Meat: Dishwashers
Kashrut: Dairy/Meat: Dishwashers: Accidental Mix-up
Situation After washing a load of utensils of one gender in your...
Wedding: Ketuba
Ketuba Process
The  ketuba  is written before the wedding but is not...
Kashrut: Manufacturing Aids
Why Simple Reading of Ingredients Not Enough
Even though foods manufactured and sold in the USA are required to list...
BUSINESS OWNERSHIP
Owning Business that Violates Torah Law
Owning a business that has any violations of Torah laws is forbidden....
Kashrut: Mitts (Oven)
Separate Oven Mitts for Dairy and Meat
Use separate oven mitts for each gender. Reason Oven mitts assume...
Kashrut: Dairy/Meat: Microwave Ovens
How To Check If a Microwave Oven Will Get Hot during Cooking
To determine if the walls of a microwave oven will get hot during...
Kashrut: Dairy/Meat: Microwave Ovens
Kashrut: Dairy/Meat: Microwave Oven Dishes
You may microwave a dairy food in a meat (or meat food in a dairy) glass...
Kashrut: Dairy/Meat: Microwave Ovens
Kashrut: Dairy/Meat: Microwave Ovens
As with conventional ovens, these factors determine kosher /non- kosher...
Kashrut: Dairy/Meat: Pot Lids
Kashrut: Dairy/Meat: Pot Lids
Pot lids are treated as if they are utensils. Situation...
Passover: Kashering
Passover: Kashering Pots and Utensils To Change from Milk to Meat (or vice versa)
You may make certain utensils kosher for Passover if they were...
Kashrut: Oil
Non-Olive Oil Oils
Other vegetable, nut, seed, and grain oils normally require kosher...
Kashrut: Oil
Oils and Kashrut Supervision
You may not use vegetable oil that has been processed in non- kosher...
Tzitzit: What To Wear
Tzitzit: Placement
Like all tzitzit , tzitzit on a talit gadol should hang over the...
Kashrut: Oil
Virgin Olive Oil
Virgin and extra virgin olive oils (which have not been deodorized and...
Weakening Halachic Observance or Respect for Torah
Appearing To Not Uphold the Torah (Mar'it Ayin)
You may not do any action that may cause religious Jews to do something...
Kashrut: Dairy/Meat: Sinks
Sink Racks and Dairy/Meat
Two racks or other utensils, one dairy and the...
Introduction to Firsts (Reishit)
Introduction to Firsts (Reishit)
Jews thank God for His blessings by giving Him the “first” (...
Kashrut: Soap
Kashrut: Non-Certified Dishwashing Liquids/Powders
Dishwashing detergents may be assumed to be kosher unless known to be...
Kashrut: Soap
Kashrut: Non-Certified Soap
Soap must be considered non- kosher unless it is certified...
Kashrut: Dairy/Meat: Sponges
Sponges and Dairy/Meat
Situation You inadvertently use a brush or sponge (hotter than...
Nida/Taharat HaMishpacha
Four Most Common Nida Questions
  What Makes a Woman a Nida  ...
Kashrut: Dairy/Meat: Stovetop
Stovetop Surfaces: Clean, Cold Utensil
Situation A dry, clean, cold utensil is put on a dry, clean, hot...
Kashrut: Dairy/Meat: Stovetop
Stovetop Surfaces: Hot Utensil with Food
Situation A hot (120° F--49° C--or more) lid or utensil...
Kashrut: Trivets
Trivets for Dairy and Meat
Use separate trivets for each gender. Reason A trivet assumes the...
Petter Rechem
Selling Mother Animal before Birth of Petter Rechem
Situation The first-born male baby of a female kosher domestic...
SENDING AWAY MOTHER BIRD (Shilu'ach HaKein)
Shilu'ach HaKein for Female Birds
Shilu’ach ha’kein only applies to the female birds of...
Matza: What Kind
When Shmura Matza Is Necessary
The only time you must use shmura matza is for the four commandments...
Sukka: Schach
Sukka: Schach: Materials
Non- Kli You may not use a kli for sukka schach...
Sukka: Overhangs
Sukka: Overhangs: Balconies
A sukka built under a balcony, even if the balcony is many...
Sukka: Overhangs
Sukka: Overhangs: Vines/Trees
Vines or tree branches that overhang even a small part of a sukka may...
Taste (Ta'am) Transfer: Spicy/Charif: Pressure
Taste (Ta'am) Transfer: Spicy/Charif: Pressure: Food Absorbing Taste of Utensils
When a spicy/ charif food takes on the gender of the cutting/squeezing...
Taste (Ta'am) Transfer: Spicy/Charif: Pressure
Taste (Ta'am) Transfer: Spicy/Charif: Sitting in Container
Cold, spicy/ charif, solid food (with no liquid) does not transfer...
Introduction to Kashrut: Dairy/Meat: Baking at Same Time
Kashrut: Dairy/Meat: Baking at Same Time: Both UNCOVERED and SPICY/Charif
Situation The food in two uncovered pans (one of dairy food, one...
Introduction to Kashrut: Dairy/Meat: Baking at Same Time
Kashrut: Dairy/Meat: Baking at Same Time: Both UNCOVERED; One Is Spicy/Charif
Situation Two uncovered pans (one of dairy food, one of meat) are...
Introduction to Kashrut: Dairy/Meat: Baking at Same Time
Kashrut: Dairy/Meat: Baking at Same Time: Liquid, UNCOVERED
Situation Two uncovered pans of food—one dairy, one...
Introduction to Kashrut: Dairy/Meat: Baking at Same Time
Kashrut: Dairy/Meat: Baking at Same Time: Solid, UNCOVERED
L’chatchila , you should not bake uncovered dairy and meat foods...
Baking Neutral/Pareve and Dairy (or Meat) at Same Time
Baking Challa at Same Time as Chicken with Sauce
Situation You baked challa with chicken, both uncovered, in the...
Baking Neutral/Pareve and Dairy (or Meat) at Same Time
Baking Non-Liquid Neutral/Pareve and Non-Liquid Dairy (or Meat) at Same Time
Situation You bake non-liquid dairy food and non-liquid neutral/...
Kashrut: Dairy/Meat: Taste Transfer in Countertops
Hot, Wet Taste Transfer in Countertops
A hot (120° F--49° C--or more), wet utensil transfers its gender...
Passover: Food Items
Frozen Vegetables
Frozen vegetables, such as spinach or broccoli, may not be used on...
Passover: Food Items
Matza (Oat)
There is no question that oat matza properly made and supervised...
Passover: Food Items
Matza (Unopened)
Kosher for Passover matza in unopened packages stays kosher for...
Passover: Food Items
Seltzer
Plain seltzer (with no additives other than water and carbon dioxide)...
Passover: Food Items
Water (Plain)
Plain water (in the USA) never needs kosher supervision, not even for...
Passover: Soap/Toiletries
Dish Soap
Dish soap made from kosher ingredients but without Passover...
Passover: Soap/Toiletries
Toothpaste for Passover
Toothpaste does not need to be specially made kosher for Passover...
Introduction to Passover
Introduction to Passover
Introduction to Passover:...
Eruv Border: Walls
Measurements for Walls as Eruv Border
Walls that begin within 10 1/2” (27 cm) of the ground and extend...
Mikva in Nature: General Concepts
Mikva in Nature: Measurements
A kosher mikva in nature: Must be 40 se’ah (about...
Mikva in Nature: General Concepts
Mikva in Nature: Rabbinic Guidance
Rabbinic guidance is recommended when using a river, lake, or spring...
Mikva in Nature: General Concepts
Mikva in Nature: Source of Water
Spring water, whether moving or stationary, is a kosher mikva ....
Lake as Mikva
Lakes or Ponds as Mikva
A lake or pond may be a  kosher mikva  if it is: Fed...
Ocean as Mikva
Oceans as Mikva
All oceans and seas are kosher mikvas, but other salty water...
Peace in the Home (Shalom Bayit)
Shalom Bayit: Non-Observant Parents and In-Laws
Ba'alei teshuva often have problems with issues of kashrut...
Kashrut: Terms
Trafe and Neveila
" Trafe " is generically used to mean any food that is not...
Spring as Mikva
Spring as Mikva
Springs are always kosher mikvas as long as the volume in the place...
Kashrut: Animals: Concepts: Masoret
Beheimot Do Not Need Masoret
Beheimot (4-legged kosher animals) do not need masoret (tradition...
Kashrut: Animals: Concepts: Masoret
Fowl Must Have Masoret
Fowl must have masoret to be identified as kosher .
Kashrut: Eggs
Kashrut: Eggs: Blood Spots: Unfertilized/Fertilized
Blood spots even from unfertilized eggs may not be eaten ; the custom...
Kashrut: Pat Akum
When You May Eat Pat Akum
You may eat bread that was not baked by Jews ( pat akum ) as long as...
Non-Spicy/Non-Charif Soaking: 24 Hours or More
Non-Spicy/Non-Charif Soaking: Transfers Taste to Utensil/Container
A non-spicy/non- charif liquid or food with any liquid (enough to pour,...
Spicy/Charif Soaking: Long Enough To Be Cooked
Spicy/Charif Soaking: Long Enough To Be Cooked: Food and Utensil
Food soaked in brine, vinegar, or any spicy liquid for long enough to be...
Introduction to Food Nullification: Foods
Introduction to Food Nullification: Foods
Categories of Batel /Nullification Categories of nullification of...
Introduction to Food Nullification: Utensils (Kashering)
Introduction to Food Nullification: Utensils (Kashering)
Food Nullification in Utensils: Torah-Law and Rabbinic Decree By...
Introduction to Blood in Meat
Introduction to Blood in Meat
Status of Blood in Meat Blood is generally forbidden to be eaten....
Kashrut: Dairy/Meat: Baking Consecutively
Baking COVERED/UNCOVERED Dairy and Meat Consecutively
Situation You cooked food of both genders: In a...
Kashrut: Dairy/Meat: Oven Spills
Baking Opposite Gender in Oven with Spills
Situation One gender of food spills in an oven. You later heat...
Kashrut: Dairy/Meat: Pot Spatters ONTO Utensil or Empty Pot
Kashrut: Dairy/Meat: Larger Pot Spatters above Normal Food Line
Situation A hot, empty pot of one gender gets a...
Kashrut: Dairy/Meat: Pot Spatters ONTO Utensil or Empty Pot
Kashrut: Dairy/Meat: Pot Spatters: Outside of Utensil, Below Normal Food Line
Situation A hot or cold meat utensil is empty or contains meat...
Kashrut: Dairy/Meat: Pot Spatters ONTO Utensil or Empty Pot
Kashrut: Dairy/Meat: Tiny Pot Spatters: Outside of Utensil, Above Normal Food Line
Situation The outside of a hot, empty pot of one...
Kashrut: Dairy/Meat: Spills and Opposite Gender Utensil
Kashrut: Dairy/Meat: Hot Spills and Opposite Gender Utensil: Unused
Situation Hot food of one gender spills (falls into...
Kashrut: Dairy/Meat: Spills and Opposite Gender Utensil
Kashrut: Dairy/Meat: Spills: Food onto Opposite Gender Utensil: Flow Chart
WERE BOTH FOOD AND UTENSIL LESS THAN 120° F ? YES What...
Kashrut: Food Served by Shomer Shabbat Jew
Kashrut: Food Served by Shomer Shabbat Jew
You may trust that the food a shomer Shabbat Jew serves is kosher...
KASHRUT: DAIRY/MEAT: FOOD OF ONE GENDER FALLS INTO OPPOSITE FOOD
Dairy/Milk Food Falls into/onto Meat or Meat Falls into/onto Dairy/Milk Food
WERE BOTH FOODS LESS THAN 120° F ? YES ARE BOTH...
Kashrut: Food Sold by Stores or Caterers
Kashrut: Reliability of Supervision
Ask a reliable source when you need to determine whether a particular...
Kashrut: Food Sold by Stores or Caterers
Kashrut: Supervision Mark
Supervision is needed during the manufacturing of certain foods to...
Kashrut: Food Sold by Stores or Caterers
When Hechsher Needed
A hechsher/kosher supervision is needed on: Seltzer with...
Kashrut: Food Sold by Stores or Caterers
When Hechsher NOT Needed
Processed Food without Hechsher: Is It Kosher?   If a...
Introduction to Taste (Ta'am) Transfer
Introduction to Taste (Ta'am) Transfer
Gender/Kashrut Status Transfer Foods and kitchenware (pots, pans,...
Kashrut: Dairy/Meat: Utensils: Dry/Wet
Kashrut: Dairy/Meat: Utensils: Heat with Dry/Wet
Hot, clean, dry utensils of opposite genders, even if touching...
Kashrut: Common Milk
Kashrut: Dairy: Chalav Yisrael
Chalav Yisrael is milk or milk products for which the milking...
Kashrut: Common Milk
Kashrut: Dairy: Common Milk (Chalav Stam)
For milk to be kosher, it must come from a kosher animal. You may use...
Kashrut: Cheese
Kashrut: Cheese: Jew at Time of Rennet
Cheese/ Gvinas Akum   Gvinas akum is cheese which has...
Kashrut: Cheese
Kashrut: Cheese: Microbial Enzymes
Cheese that is made using even microbial enzymes requires kosher...
Kashrut: Fish: Varieties
Conger Eel with Scales
Conger eel with scales is a kosher fish! It must have a backbone....
Kashrut: Plants: Three-Bug Rules: Cooked Food
Introduction to Finding Three or More Bugs in Cooked Food
If you find three or more bugs cooked in otherwise kosher food, you...
Kashrut: Fish: Smoked
Kashrut: Smoked Fish
Smoked fish needs supervision due to possibly non- kosher items:...
Artichokes
Finding Bug in Cooked Artichoke
If you cook an artichoke and then find a bug in it, the entire artichoke...
Kashrut: Meat: Non-Glatt
Non-Glatt Meat for Sefardi Guest
Non- glatt meat at an Ashkenazi house doesn’t necessarily...
Kashrut: Meat: Non-Glatt
Non-Glatt Meat Utensils
Cooking kosher , non- glatt meat in a utensil does not render that...
Kashrut: Meat: Hindquarter
Hindquarter Meat
You may eat hindquarter if the sciatic nerve and forbidden fat are...
Introduction to Kashrut: Dairy/Meat
No Eating, Cooking, or Benefiting from Dairy with Meat
You may not cook or eat dairy and meat foods together, even when they...
Introduction to Kashrut: Plants: Bugs
Why Bugs May Not Be Eaten
Bugs are not kosher and may not be eaten for two main reasons:...
Kashrut: Plants: Bugs: Which Foods To Check
Checking Frozen Vegetables for Bugs
You may eat any and all frozen vegetables and you do not need to soak...
Kashrut: Uncooked Grape Juice/Wine
Kashrut: Open, Uncooked Wine: Drinking or Benefiting From
You may not DRINK or DERIVE ANY BENEFIT FROM open (unsealed), non-...
Kashrut: Uncooked Grape Juice/Wine
Kashrut: Open, Uncooked Wine: From When May a Non-Observant Person Not Handle?
A non-Jew or non- shomer Shabbat Jew may not handle wine (or...
Shabbat: Bottles
Opening Metal Bottle Caps on Shabbat
You may not open metal bottle caps on  Shabbat  if...
Introduction to Toveling: Utensils
Introduction to Toveling: Utensils
Tevila is the Hebrew word for immersion.  You must tovel...
Toveling: Utensils: Kasher or Tovel First?
Toveling: Utensils: Kasher or Tovel First?
If you have a non- kosher food utensil, kasher it before you immerse...
Kashrut: Dairy/Meat: Spatters INTO a Pot of Food
Kashrut: Dairy/Meat: Hot Dairy Food Spatters INTO Meat Pot, or Vice Versa
Situation Hot dairy food spatters INTO a pot of...

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