Both ingredients are often used in gluten-free and sugar-free baking. And some recipes use a combination of them both. Guar gum is made from a seed and xanthan gum is made from fermented sugar.u003cbr/u003eu003cbr/u003eGuar gum is best used in cold recipes such as ice cream, and xanthan gum is best used in recipes that need heating.u003cbr/u003eu003cbr/u003eThere is no strict ratio to swap guar gum for xanthan gum but most consider 1:1.5 So 1 teaspoon of xanthan gum = 1.5 teaspoons of guar gum.