Yogurt Making Jar Set, 500ml, glass. Perfect for making fresh, delicious dairy and plant-based yoghurts. The thermometer enables you to monitor the temperature of the mixture, while the specifically designed neoprene insulating pouch maintains the temperature. The set includes 500ml and 250ml wide-mouth glass jars with stainless steel lids, a neoprene insulating pouch and a stainless steel thermometer. How-to-use instructions and yummy yogurt recipe included.