There are about 3 tablespoons of soup mix in a Lipton onion soup packet. If you’re following a recipe, you may want to use that amount of this soup mix as well. Of course, a little more or a little less soup mix won’t ruin your recipe. One word of caution. The amount of salt in the store-bought soup mix may be different than the homemade. Always taste your recipe after adding this mix and before adding any additional salt. You can always add salt, but it's really hard to take out.