Fresh bread crumbs can be added as a thickening agent and tomato juice can be used instead of stock for a richer taste.
It's merely the protein found in typical varieties of wheat, and this gluten is often added to food products because of its ability to act as a thickening agent.
Add seeds to sauces to act as a thickening agent and to provide a unique texture.
It adds a silky texture, and acts as an emulsifier, or thickening agent.
Roux (pronounced Roo) is a thickening agent that is used in sauces and gravies.