Onion powder is a dehydrated, ground spice that serves as a seasoning made from finely ground dehydrated onions. It has a similar flavor to fresh onions, but comes in a convenient, shelf-stable form. It is white or slightly yellowish in color and is often used in soups, stews, spice rubs, salad dressings, and marinades to effortlessly impart a savory, sweet onion flavor. Onion powder also blends well with other spices and herbs, helping to form a complex flavor profile in a wide variety of dishes. It is a go-to option for those who seek the taste of onions without the tears, chopping, and cooking processes. Onion powder is a versatile ingredient, adept at adding depth to a multitude of cuisines and dishes, right from simple snacks to gourmet meals.

Onion powder can typically be found in the spice aisle of a grocery store.