Xanthan gum is a natural carbohydrate produced by fermenting glucose with Xanthomonas campestris bacteria (found in cabbage). It's become very popular in the gluten free baking. It is used as an emulsifier or a thickener. Xanthan Gum is used in emulsify salad dressings and suspend herbs/spices in the dressing. Soluble in hot or cold water. Stable over a range of pH and temperatures. Can thicken items with a high alcohol content. Compatible with, and stable in, high salt concentrations. It does not alter the flavour or colour of foods.