Two of every unclean animal, seven of every clean animal. Goes to show that Noah kept kosher because if he ate an unclean animal, that species would have gone extinct, haha
Refined salt (sodium chloride) is a pure substance; but kosher salt is only an error because salt is an inorganic product..
Kosher applies to vegetables too. All pure minerals are kosher.
Kosher
Clean, fit, pure, and proper
Kosher food. Kosher animal species are called Tahor (ritually pure) in the Torah.
No. Kosher hot dogs are made from 100% pure beef.
Curry is just an herb and spice blend used in many recipes. The herbs and spices used in curry are all inherently kosher for Passover, so the only problem would be if the curry is adulterated by adding wheat or flour, or if the curry is prepared using dirty implements. Blended spices (as opposed to pure spices) need to be blended under kosher supervision to be kosher. If you are asking about curried meat dishes, they are only if kosher if the meat itself is kosher, and if the dish does not involve any milk products -- note that many traditional curries do involve milk, cream, ghee or yoghurt. The curry itself, however, is not the source of trouble.
There is no symbol for pure. But if you are asking for the Hebrew word for pure, it is טהור ( pronounced tah-HOR).
No.
No, it is not. - old answer from someone else. My answer: Actually, Z23 is fine while Z30 may have a problem. Z23 is pure rum from sugar cane and is similar to pure whiskeys, not needing supervision or a hechsher. In the past, Z30 has used wine as a softening additive, and can't be trusted. Meanwhile, Z23 is available at on-line kosher stores.
It's an herb, so if it's not adulterated, just the pure herb, it poses no more challenge than tea or coffee.
No, Jews are allowed to eat honey. This is because there is a special exemption in the bible which makes honey Kosher, or pure to eat.