Gellan gum is a natural polysaccharide used as a gelling agent, thickener, and stabilizer in various food products. It is derived from the fermentation of a specific strain of bacteria called Sphingomonas elodea. Gellan gum is popular in the food industry because it can create a gel-like texture at low concentrations and is suitable for both hot and cold applications. In addition to food, gellan gum is also used in pharmaceuticals and cosmetics for its thickening and stabilizing properties. It is considered vegan and gluten-free, making it a versatile ingredient for those with dietary restrictions.