hi,
Please note I'm not a teacher nor a native speaker;
When -s is added to the end of a countable noun it means two,theree .... copies of the same thing as in :
one pencil
two pencils
The suffix -s at the end of uncountable food related nouns got a different meaning; I just can think of the classic "wines", "fishes" and the "foods" as in the examples OP has given. it means a different variety of that sort.
"Spanish wines" means "different types of wine that were made in Spain" (note the lack of the suffix -s in the second "sentence")
That usage of "wines", "foods" is rarely if at all preceded by a number.
some examples from BNC :
[...] using microwave ovens to heat other foods such as cheese, meat or fish, which contain amino acids, [...]
[...] and other starchy foods such as millet and rice[...]
[...]Mostsweet foods like chocolate, biscuits, cakes and many puddings have a high fat content [...]
cheers;