Answer:
This toasted sandwich is made with bacon, lettuce and tomato
What can be opened but cannot be closed?
Alight or in dark, my face is a leer. In a field with my brothers, you’ll find me without bother, For that autumn day is mine.
Sauerkraut owes its existence to this head
This food is usually grilled and put between two buns, with cheese, tomato and pickles.
I’m grown from darkness but shine with a pale light. Very round I am and always a lady's delight.