The microbial Rennet Valiren is a food grade enzyme obtained by the controlled fermentation of special strains of Rhizomucor miehei. It contains the specific protease activity, which makes it effective as a milk coagulation enzyme. Valiren meets FCC recommended specifications for food enzymes. Our products are Kosher and Halal certified. Use a bag for 100 liters of milk. 3 bags coagulate up to 300 litres of milk. If you have any problems with this microbial race, you can return it at any time for a COMPLETE without asking questions.