The scientific journal Nature has published a study of the residues left in very old pottery shards that happen to form pots with holes in them. These porous pots could have been used for a great many tasks, but one that’s always been listed is for cheese making. This study shows the presence of milk fats in the pots, which appears to strongly corroborate that hypothesis. The linked article (on the BBC web site) has lots more info on the ideas surrounding how ancient cheese making skills are, and how they might have been developed.