No, it is just an adjective, so in the middle of a sentence, you'd just write kosher in lower case.
No, coral does not need to be capitalized.
The word evolution does not need to be capitalized.
No, it doesn't need to be capitalized.
No, circa does not need to be capitalized.
No, kinetic energy doesn't need to be capitalized.
Yes and no. There are many recipes that can be made kosher with kosher substitutes.
Yes! You don't need a kosher cookbook. Just remove the non-kosher ingredients.
No, coral does not need to be capitalized.
The word evolution does not need to be capitalized.
hair color does not need to be kosher.
No, it doesn't need to be capitalized.
No, it shouldn't be capitalized.
No, circa does not need to be capitalized.
No, kinetic energy doesn't need to be capitalized.
You need to prepare it and bring it with you to wherever you'll be.
No. Queries do not need to be capitalized.
it does not need to be capitilized.