Xanthan suspension is the use of xanthan gum to increase the viscosity of a liquid so that small particles, herbs or other ingredients remain dispersed rather than quickly settling. Xanthan is a hydrocolloid produced by bacterial fermentation and is effective at low concentrations. The amount required depends on the liquid, particle size, acidity, salt, temperature and desired texture.
Xanthan gum hydrates in water and forms a viscous solution. It increases the liquid’s resistance to flow, helping slow the movement of suspended particles. It can also stabilise some emulsions, but it does not replace a true emulsifier in every formulation.
Example: a small measured quantity of xanthan may be blended into a herb vinaigrette to keep the herbs distributed between uses.
Disperse xanthan gradually while blending to avoid clumping. Allow time for full hydration, then adjust in small increments. Excessive use can create a gummy, slippery or slimy mouthfeel. The often-cited 0.1–0.3% range is a starting point for some fluid preparations, not a universal formula.
Chef’s tip: weigh xanthan accurately and record the percentage in the recipe. Test the finished texture after hydration and after refrigeration, because viscosity can change with time and temperature.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.
