Answer:
As soft as silk, as white as milk, as bitter as gall, a thick green wall, and a green coat covers me all.
I ate one and threw away two
Both peaches and a certain couture have this in common.
Green but not a lizard, white without being snow, and bearded without being a man.
A wonderful elixir, It is your fluid fixer. Gulp it down and turn like a concrete mixer. Dark as night and sweet as sin, It's like liquid heroin.
What is round, has a twin, and sees more than most?
Food
Animal
Difficult
Easy
Funny
Kids
Logic
What am I?