Sweet corn is grown for sale as a whole vegetable and for canned or frozen corn products. This is the type that we buy fresh from grocery stores, boil or steam and smear with butter. Popcorn kernels are dark yellow, with a very hard endosperm. When heated, they burst into soft white edible bubbles. Like sweet corn, they are often served with butter.
Flint corn is similar to dent corn but higher in protein and easier to digest.
It is also more resistant to insect damage during storage. However, flint corn crops have a much lower yield and a shorter growing season than dent corn crops, so they are not as productive for commercial purposes. Flint corn is mainly grown in South America, Africa and southern Europe.