Answer:
Ketchup's slightly less popular brother.
A fruit on a tree. A tree on a fruit.
I'm a food made of flour, water, and yeast or another leavening agent, mixed together and baked. You need me to make a sandwich.
Delicious but said to be a lie.
This food is usually grilled and put between two buns, with cheese, tomato and pickles.
What never gets any wetter no matter how hard it rains?