Kosher simply refers to food that is made following the laws of kashrut (Jewish dietary laws), it is not a style of cooking. Therefore, wherever there are Jews who keep kosher, you will find kosher versions of local foods.
I would hope so!
Yes.
All of them are kosher
Only cuisines that produce raised baked goods would use baking powder.
Almost all spices are kosher.
When correctly slaughtered, goat is a kosher meat.
All salt is kosher unless something is added to it to make it not kosher. Like all other seasonings, the specific package must be certified kosher for Passover.
Yes, all fish with fins and scales are kosher.
Not all of them are kosher. It will say on the box.
Yes.
Yes, yellow tail is a kosher species of fish.
All vegetables are kosher if they have been checked and are bug free