Guar gum
Top 10 in Top 10 Best Substitutes for Cornstarch
Another vegetable gum is guar gum. Guar beans, a kind of legume, are used to make it. The bean's outer husks are removed, and the starchy endosperm in the center is gathered, dried, and ground into powder.
It works well as a thickener since it has few calories and lots of soluble fiber. Due to its relatively lower cost than xanthan gum, some people prefer using guar gum. Simply mix a little amount of the guar gum with water to thicken dressings, smoothies, or other liquids before adding it to your recipe. Though, just like xanthan gum, guar gum is a powerful thickener. Start with a little amount, roughly one-quarter of a teaspoon and gradually increase until you get a consistency that you like.