"Food" is oneUncountable nouns, which is often used to refer to food or food as a whole. For example, when we say "I like food from different countries."(I love food from different countries.) ), we are talking about food as a whole, rather than a specific food type or quantity.
However, when "food" is used to refer to a particular kind of food, it can be used as a countable noun, but its plural form is less common. For example, "types of food" or "kinds of food" can be used to refer to different kinds of food.
In addition, when "food" is used as part of a quantitative expression, such as "a food processor" or "a food court", "food" is used as a modifier to refer to food-related equipment or premises.
In summary, "food" is often seen as an uncountable noun, but in some contexts, it can be used as a countable noun, especially when referring to a specific kind of food.
Here are the sentences that use the word "food'' that covers its usage as an uncountable noun and a countable noun:
food is essential for our survival and growth.(Food is essential for our survival and growth.) ）
i enjoy trying different kinds of food from around the world.(I like to try different kinds of food from all over the world.) ）
the restaurant offers a variety of delicious foods.(This restaurant offers a variety of delicious food.) ）
the smell of fresh food cooking filled the kitchen.(The kitchen is filled with the aroma of fresh food as it is cooked.) ）
she has a special diet that excludes certain foods.(She has a special diet and doesn't eat certain foods.) ）
can you recommend a good place for vegan food in this city?(Can you recommend a good vegetarian spot in the city?) ）
food processors make it easy to prepare healthy meals.(Food processors make it easy to prepare healthy meals.) ）
the food court at the shopping mall offers a diverse range of culinary options.(The mall's food court offers a wide variety of food options.) ）
These sentences illustrate that "food" is often used as a general term to refer to food or food as a whole as a whole, when used as an uncountable noun; When used as a countable noun, it can be used to refer to a specific kind of food or as a modifier.