it chews its cud and has split hooves
This makes no sense. Some kosher what?
The question makes no sense. Who is "kosher"?
Kosher Pizza Express
You need to call your local Orthodox rabbi so he can come to your house to help you.
That depends on the company that makes it.
All salt is kosher. "Kosher salt" is a particular grade of salt, with coarse crystals, that is used for making meat kosher, and is also useful in cooking. It's no more kosher than any other kind of salt.
If the kosher caterer in question makes wedding cakes, the cakes in question would be kosher.
Usually gelatin. Kosher marshmallows are made either with fish gelatin, or with Kolatin™ brand kosher gelatin, which is made from the bones of kosher slaughtered cows.
Kosher means fit. The set of laws about what makes food kosher is called 'kashrut'. These laws specify what foods religiously observant Jews can and cannot eat.
Bisons are mammals.
They are made according to Jewish law and custom, and in cleanrd facilities(never touching what un kosher food has touched)
Every ingredient of a kosher food has to be kosher, and the product processed in a plant that has kosher supervision. For a thorough explanation of what makes something kosher, take a look at the question in the related link below. Its also more expensive on the grounds that somebody had to look at it and say it was kosher. _____ Most major brands of potato chips are kosher although some of the flavours might not be kosher. In general, getting kosher certification lowers the price of an item because it increases the company's customer base.