These living cultures will help you create Water Kefir. A probiotic soda drink. You need only cultures, water and sugar to make this drink. The grains feed off the sugar and make a probiotic soda that is delicious flavoured with ginger or lemon, or any fruit of your choice. They have no best before date. They are living and they continue to reproduce so you too will have some to share after a while of looking after them. If you are coming to collect grains you must bring a jam jar to carry them home in. I am offering just the grains (no jars) in batches of 70gm which is enough to start making 1lt of drink.