Alginate and/or pectate gels are produced by forming an aqueous mixture of a water soluble or water dispensible alginate and/or pectate, a calcium ion sequestrant and a sparingly soluble calcium ion source at low temperature and heating the mixture to cause gelation thereof. Sequestrant is preferably sodium or potassium pyrophosphate but at least part of the sequestrant may be replaced by meat having calcium ion sequestring activity. The calcium ion source is preferably calcium sulphate dihydrate. Preferably the mixture is heated to at least 50.degree. C. to induce gelation.