Natural Rennet Tablets. Tube with 20 tablets. Each rennet tablet is good for 20 l milk and each tablet can easily be broken in four quarter tablets. Making cheese of quantities of 5L milk possible. Dissolve the tablet in a little cool, clean water and add it to the milk. Simply does it! When ordering, feel free to advise what type of cheese you intend to make and we will try to supply a recipe to help you on your way.