Nature's Flavors English Toffee Flavor Powder is Vegan, Kosher, and Gluten Free. This all natural powdered flavor contains no allergens and is excellent in baking applications, dry beverage mixes such as instant coffee, cocoa, protein blends, and is a perfect addition to dry mixes such as pancake, waffle, protein mixes, muffin, beverage and meal replacers. This flavor is moderately heat stable. It brings out a well rounded flavor in these applications. Starting usages should be 1 to 5% depending on how long you cook and how high the temp but you may use even less flavor in some applications due to the nature of the flavor and the make up of the formula ingredients you are using. It is not uncommon to see usages of less than 1% and .1% could be your finished usage. You will have to experiment with each flavor as they can all vary. Save your notes.