Most rennet sold today is not natural animal rennet at all. The vast majority of commercial cheese is made with Fermentation-Produced Chymosin (FPC) — a genetically engineered enzyme produced by inserting calf chymosin genes into fungi, bacteria, or yeast and fermenting them at industrial scale. FPC accounts for roughly 90% of global rennet use. It is considered by most regulatory bodies as "generally recognized as safe," but it is a product of genetic engineering and industrial fermentation, not traditional cheesemaking.
Walcoren 96TP1150 tablets are the real thing — traditional natural animal rennet extracted from calf abomasum using time-honored methods, then pressed into convenient pre-measured tablets. They deliver the complete natural enzyme complex: approximately 96% chymosin and 4% bovine pepsin. This complete enzyme profile is what makes aged, artisanal cheeses develop their complex flavor characteristics over long maturation periods — characteristics that FPC rennet simply cannot replicate. The tablet format trades a little of the powder's dosing flexibility for everyday convenience: each tablet sets a known volume of milk — approximately 4 litres — so there is nothing to weigh.
Walcoren holds ISO 22000 and FSSC 22000 food safety certifications and Halal certification. Their technical data confirms excellent microbiological standards. Two honest notes: like the powder, the tablet is standardized with natural salt (the technical sheet lists sodium chloride as the bulk of the product) — this is the customary, expected carrier for rennet, not a foreign additive, but it is worth stating plainly rather than implying the tablet is pure enzyme. And independent third-party heavy-metals or contaminant testing is not publicly disclosed — for a highly concentrated coagulant used in tiny amounts, the ISO and FSSC certifications provide meaningful assurance of production quality and safety.
