Use Guar Gum as a substitute for Xanthan Gum like a pro with our recipe. star Substituting Xanthan Gum with Guar Gum Rated 5.0 stars by 1 users Share on Twitter Share on Facebook Share on Pinterest Share on Whatsapp Servings 1 Prep Time 5 minutes Cook Time 0 minutes Use Guar Gum as a substitute for Xanthan Gum like a pro with our recipe. Ingredients 1 tsp Guar Gum DirectionsUse 1 tsp of Guar Gum to substitute ½ tsp of Xanthan Gum. Adjust ratio to any recipe of your choice.