Rennet The Secret To Better Cheese

Rennet is the problem and the solution to rubbery cheese. Or at least one of the solutions that you actually can measure, adjust and resolve. Rennet may be one of the smallest ingredients you add to milk, but it has one of the biggest jobs in cheesemaking. Milk contains tiny bundles of protein called casein micelles. These proteins normally stay separated because their surfaces are protected by kappa casein. When you add rennet, an enzyme called chymosin cuts part of this protective layer away. Now the casein micelles can move closer together, connect, and slowly build a network. That network is what changes a pot of liquid milk into a soft gel that can eventually be cut into curds. But the amount of rennet matters. If the network forms too quickly or too slowly, the curd may not behave the way you expect. In this video, I look inside the cheese pot to show what rennet is doing, why flocculation time can help us judge the process, and how coagulation time can influence the curd we eventually cut, stir, drain, and press. Understanding this little bit of science can make rennet feel much less mysterious and help us make more predictable cheese. Science reference: Salvador D, Acosta Y, Zamora A, Castillo M. Rennet Induced Casein Micelle Aggregation Models: A Review. Foods. 2022;11(9):1243. DOI: 10.3390/foods11091243. 🧀 Joy of Cheese Cheese Press Calculator: https://apps.apple.com/us/app/cheese-... Joy of Cheese content is provided for entertainment purposes only. It is not professional advice or information. It is not a recommendation for what you should do. Informational and Educational Purposes OnlyThe content provided in this video and on this YouTube channel is intended solely for general informational, educational, and entertainment purposes. It does not constitute professional, scientific, medical, legal, or financial advice. The information presented in Joy of Cheese videos, recipes, illustrations, calculations, and other materials has not been independently reviewed, validated, or certified for accuracy by a regulatory agency, academic institution, food safety authority, or other third party. Viewers are responsible for verifying information independently, following recognized food safety practices, using properly sanitized equipment, and complying with any applicable local regulations.