The laws relating to keeping a kosher (fit or proper) home in Judaism
Mitzvot
Commandments or laws in Judaism, mainly in the Books of Deuteronomy and Leviticus
Kosher
Foods permitted by and prepared in accordance with Jewish dietary laws
Treif (or trefah)
Foods not permitted in Jewish dietary laws. The word means 'torn'.
Land animals
Must have cloven (split) hooves and must chew the cud
Seafood
Must have fins and scales. Eating shellfish is not allowed.
Birds
Only clean birds, meaning birds that do not eat other animals, can be eaten. Poultry is allowed.
Meat and dairy
Cannot be eaten together, as it says in the Torah: 'do not boil a kid in its mother's milk' (Exodus 23:19)
Shechitah
The correct method of slaughtering animals for food in Judaism. A sharp knife is used and there must be one cut to the throat of the animal. This can only be practiced by a specially trained person known as a shochet.
Shochet
A religious Jew who is licensed and trained to slaughter animals in accordance with kashrut rules.
Parev
Neutral foods, that can be eaten with either meat or dairy
Examples of treif foods
Shellfish
Pork products
Food that has not been slaughtered in the correct way
Examples of parev foods
Vegetables
Pasta
Rice
Orthodox Jews
Keep all the rules of kashrut. Some even have separate utensils and perhaps fridges for the preparation and storage of meat and dairy products.
Reform Jews
May choose to observe all of the kashrut, or a selection of the laws, or observe kashrut at home but not elsewhere.
In big cities with large Jewish populations in the UK, there may be kosher supermarkets, shops and restaurants catering for the Jewish communities, often located nearby synagogues
Even in smaller communities where there are fewer Jewish people, most major supermarkets will have a kosher food section
Many food manufacturers produce ordinary foods to kosher standards
Some foods and drinks are labelled 'parev' to show that they contain no meat or dairy
Some Jews will avoid eating out at dinner parties, non-kosher restaurants and cafes, while others, particularly Reform and Liberal Jews, will be less strict about the rules when eating out or at friends' homes
Lots of Jews may stick to vegetarian or vegan options when eating out, as all of these foods are parev