Vegetarian cheese uses plant-based extracts to curdle the milk.
If it doesn't curdle in 20 minutes, add a little more lemon juice.
Mix eggs with lemon juice and stir this mixture slowly into warm soup (to cook but not curdle eggs ).
Whisk vigorously each time so that the soya milk does n't curdle.
Cheese is made by adding the active enzymes from rennet to milk, causing the liquid to curdle and separate.
