Edible vs. Eatable

Which one do you use? Is ''eatable'' a word?

While I've never used it (I say "edible"), it is.

Cambridge Dictionary: http://dictionary.cambridge.org/define.asp?key=24641&dict=CALD

Dictionary.com: http://dictionary.reference.com/search?q=eatable

I wrote eatable in one of my papers in third grade, and my teacher jumped on me. She said it wasn't a word. She also failed to tell me to use edible. Use edible, if you don't want to be laughed at.

I think there may be a distinction. Maybe edible is technical, i.e. literally whether it is a foodstuff that can go in your stomach without coming straight back out again.

On the other hand, a huge bowl of pasta may not be eatable simply because of the quantity.

EATABLE (adjective)
describes food that is good enough to eat, though not excellent
Compare edible.

EDIBLE (adjective)
suitable or safe for eating:
Only the leaves of the plant are edible.
Compare eatable at eat.
NOTE: The opposite is inedible.

(from the Cambridge Advanced Learners' Dictionary)

Any Latin suffix may be freely used in English. So that teacher was stupid.
´eatable´ is a word. Edible comes from Latin edere.

There was one time a long time ago when I heard someone say that a certain kind of fish was ''eatable'' and I corrected them.

''Edible'' is correct and ''eatable'' is not a word.