Food - countable or uncountable?

Some foods are uncountable nouns. All liquids are uncountable nouns.

Here is a list of some uncountable foods and liquids.
butter
cream
cheese
yoghurt
bread
sugar
pastry
fish - Is fish countable or uncountable?
toast
spaghetti
meat
popcorn
poultry
coffee
milk
oil
tea
water
wine