thickener

A thickener is a food additive or ingredient that increases the viscosity of a liquid or semi-liquid product without substantially changing its other properties. In food production, thickeners are used to achieve the desired consistency in sauces, fillings, creams, dairy products, beverages, and many other items. Common thickeners include modified starches, pectin, agar, carrageenan, xanthan gum, guar gum, and locust bean gum.

The choice of thickener depends on the target texture, processing conditions (especially temperature), acidity of the product, and desired mouthfeel. Some thickeners form true gels (like agar and pectin), while others simply increase viscosity without gelling (like guar gum and xanthan). In heat-stable fillings, thickeners play a critical role by binding free water and preventing boil-over during baking.

Discover more about thickeners — including types, dosage guidelines, and practical applications — in the articles below.