What is the fine-grained topic of the following text: Equivalents: 5 medium onions = 1 pound = 2 cups chopped = 3 cups sliced1 small onion = 1/3 cup = 1 teaspoon onion powder = 1 tablespoon dried onion flakesPrecautionsAvoid when there is profuse sweating. Only return the topic.
Onion equivalents and usage precautions