the corn milk yogurt with added WPI alone did not form a good gel at any of the tested concentration. sodium caseinate was a better fortifying protein, enabling a good gel to form at the concentration of 4%. tamime and robinson noted that the minimum solid concentration of cow milk yogurt w.as 8.2-8.65%, but the consistency of yogurt was greatly improved when the solid increased from 12 to 20%. the optimal total solid to produce yogurt from soy milk and a mixture of mango pulp, soymilk and buffalo milk were 11.49 and 12.26, respectively