Cheese ripening the cheese by fungi to occur. Mould-ripened cheeses ripen faster than hard cheeses, in weeks as opposed to the typical months or even years. This is because the fungi used are more biochemically active than the starter bacteria. Where the ripening occurs is largely dependent on the type of cheese: some cheeses are surface-ripened by moulds, such as Camembert and Brie; and some are ripened internally, such as Stilton. Surface ripening of some cheeses, such as Saint-Nectaire cheese, may also be influenced by yeasts which contribute flavour and coat texture. Others are allowed by the cheesemaker to develop bacterial surface
Sour milk cheese Sour milk cheese Sour milk cheese or acid-set cheese is a cheese that has been curdled (coagulated) by natural souring or by the addition of lactic acid bacteria, such as traditional curd cheese or cottage cheese. Sour milk cheese does not use rennet for coagulation. Sour milk cheese generally ripens for no more than two weeks in comparative warmth. 100 litres of milk yield about 8 to 9 kilograms of sour milk cheese, which contains less than 10% fat and up to 37% protein. Most sour milk cheeses are white mould cheeses or red mould cheeses, and many are flavoured