This is Double Strength rennet that contains no animal products. CONTENTS & YIELD: Enzyme produced by pure fermentation of Mucor Meihei in salt brine, less than 5% propylene glycol, less than 2% sodium propionate. 1 drop will set 1 gallon of Goat milk into our wonderful Chevre! 1/8 tsp. will set 1 gallon milk. 1 oz. will set up to 48 gallons of milk 2 oz. will set up to 96 gallons of milk