"Food" vs. "foods" — spelling and meaning [closed]

Food in its commonest sense is a non-countable noun, with all the effects of that. It's already a plural. You would eat "some food" not "a food". You would say "less food" not "fewer foods".

However, there is a less common usage where "a food" means "a type of food":

"Cheese is a food made from milk"

... and in this form, you can pluralise it ...

"Italy is the source of many delicious foods -- pizza, pasta, salami, biscotti..."

For comparison, think of "a people" - Are there meta-plurals beyond "peoples"?

Kraft Foods ... Lots of byspels of the plural for foods. It's common and correct.