Some people peel my skin some people don't, you eat me nevertheless, with or without, what am I?

Question

Guess me:
I am 5 letter word,
people eat me,
If you remove my 1st letter I will be a energy form,
If you remove my 1st two letters I will be needed for living,
If you remove my 1st three letters I will be near you,
If you remove my 1st four letters I will be a drink for you.

Who am I?