The history of kosher (Kashrut; kosher laws; kosher foods) is part of the Torah-history itself, meaning that it goes as far back as the Torah does because it is based on the Torah and is a part of it. Many of the basic Kashrut laws are stated explicitly in the Torah (see Leviticus ch. 11).
Because God said so.
No. Emu meat is not considered kosher because emu resembles ostriches which are not kosher as well. (The rhea and the cassowary are not kosher for the same reason.)
Their is only one reason, because God told them to
No, lobster is not kosher. The reason for this is that aquatic animals must have both fins and easily removed scales in order to be kosher.
There's no reason it shouldn't be, but of course it depends on the specific brand. Check the label for a hechsher.
Kosher salt is exactly the same thing as any table salt the only difference is it bigger pieces. The only reason it's referred to as kosher is because in order to eat kosher meat the blood must be removed and it is usually done by a process of salting and bigger pieces of salt work better for it
It is kosher so long as it is certified kosher.
Fox meat is not kosher. See:More about what is and isn't kosher
It needs to be cooked in a kosher vessel and have kosher ingredients. If purchased, it (or the bakery) should have kosher-certification.
Yes and no. There are many recipes that can be made kosher with kosher substitutes.
Delicatessen places serve kosher food. And if you are talking about 'deli' food, it is usually kosher. _______ Delis are only kosher if they're kosher certified. Most delis aren't kosher.
Yes! You don't need a kosher cookbook. Just remove the non-kosher ingredients.
They can eat a kosher diet, and be slaughtered the kosher way.