There are many types of onions, some of the most common include:
White onions: These have a milder flavor and are often used in Mexican and Latin American cuisine.
Yellow onions: These are the most versatile and are used in a variety of dishes. They have a moderate flavor and are often caramelized for use in soups and stews.
Red onions: These have a stronger flavor and are often used raw in salads and sandwiches. They are also a popular garnish for burgers and hot dogs.
Sweet onions: These have a high sugar content and are used in sandwiches, salads and as a topping for pizza.
Shallots: These are small and have a mild, sweet flavor. They are often used in French and Asian cuisine.
Leeks: These are related to onions and have a milder, sweeter flavor. They are often used in soups, stews, and casseroles.
Scallions: These are also known as green onions and have a mild flavor. They are often used as a garnish or in salads.
Pearl onions: These are small, round onions that have a sweet and mild flavor. They are often pickled or used in stews and casseroles.