Skimmed milk is curdled by the addition of vinegar or rennet, and beaten to a paste with powdered quicklime.
½ pint skimmed milk, ½ pint vinegar, mixed with the whites of 5 eggs; the whole is well beaten, and sufficient quicklime is added to form a paste. These cements are used for mending glass and earthenware; they resist water, and a moderate degree of heat.