Onion salt is a convenient substitute for chopped onions. It’s useful when you don’t have the time to prepare chopped onions, or want to add onion flavor to a dish without the bulk of additional ingredients. In flavor, two teaspoons of onion salt is about equivalent to one small to medium yellow or white onion. Many feel that the seasoning is better than using raw onions because it tends to impart a milder and less sharp flavor than does raw onions. This simple mixture of onions and salt brings savory, toasty flavor to soups, stews, burgers and more.