Ingredients Second-day milk method Heat second-day milk gently in a saucepan until it separates. Pour into a fine sieve (or line a sieve with cheesecloth or clean, sterilised open weave dishcloth) and leave to drain. This can be used as-is for a quark or a sweet cottage cheese. Add salt for a more savoury flavour. Add chopped fresh herbs for a delicious spread.