We opened registration for this one back in November, and today it filled the room — or the login window, since it ran as a webinar. Rennet Alternatives drew a mix of members who are already using a non-animal coagulant and want to tighten their process, and members who are simply curious whether a switch would change their cheese at all. Both groups got something out of it.
The session walked through the two broad categories members actually encounter: microbial coagulants, produced by fungal fermentation and in commercial use for decades, and fermentation-produced chymosin, made by engineering a microorganism to produce the same clotting enzyme found in traditional animal rennet. The practical difference for most makers isn't philosophical, it's technical — the presenter spent real time on how each option behaves across different pH and temperature ranges, and where a maker used to standard calf rennet might see a softer set or a different whey drainage pattern the first few times through a batch.
Why members keep asking about this
The interest isn't new, but it's been building for years. Calf rennet supply has never been unlimited, and demand for non-animal coagulants has grown steadily as more producers look for consistent, always-available inputs and as more of their own customers ask what's actually in the vat. For members making cheeses under a religious or dietary claim on the label, the coagulant source is often the first thing a retail buyer checks — get it wrong on the label and the conversation with your distributor gets a lot less friendly, fast.
One thing the presenter kept coming back to: this is a make-sheet decision, not a label decision. Change the coagulant source, and you may need to revisit your set time, your target moisture, and — for anyone operating under a formal food safety plan — the parameters written into that plan. A coagulant swap that isn't reflected in your documentation is exactly the kind of gap an inspector will flag on a routine visit, and it's an easy one to avoid by simply updating the paperwork the same week you change the vat.
A few attendees asked about cost. The honest answer is that it varies by supplier and by volume, and the federation doesn't publish pricing guidance — that's a conversation to have directly with your ingredient supplier, who can quote against your actual batch size.
It's also a reminder of how international this conversation has become. This fall's international cheese awards drew a record entry list, with judging panels weighing technical execution as heavily as flavor — and coagulant choice is exactly the kind of technical detail that shows up on a scoresheet before it shows up on a shelf label.
If you missed it
We'll have a recording available for members who registered but couldn't make the live session; check the Education Committee's course listing for access details. If you're actively considering a switch rather than just curious about one, the Cheese Chemistry course covers coagulation mechanics in far more depth than a single webinar can, and it's worth the longer format if this is a change you're planning to make in the coming year rather than just study from a distance.
Either way, don't make the swap quietly. Tell your buyer, update your label copy if the claim changes, and update your food safety documentation before your next batch, not after your next inspection.
The International Cheese Federation (ICF) and More Cheese are entirely fictional. This post is demonstration content created for MemberJunction. All people, organizations, events, courses, certifications, figures, and quotations in it are invented, and nothing here represents a real association, a real business, a real person, or real professional advice.