Onion powder is a finely ground spice made from dehydrated, dried onions. It offers a convenient way to add the distinct, savory flavor of onions to dishes without the texture of fresh onions. Onion powder is commonly used in seasoning blends, marinades, sauces, soups, and snacks, providing a rich, umami taste that enhances everything from meats to vegetables. It has a long shelf life, making it a pantry essential for quick and easy flavoring. Its versatility and concentrated flavor make it a popular choice for both home cooks and food professionals alike.