The all-new Brewery in a Bag range. No equipment required. Everything you need is in the tube. Just Add Water, 12L (25 Pints) Water Brewed and Ready to Drink in 30 Days. These revolutionary new products make the brewing of beer at home as simple as making a cup of tea. With our brew in bag systems, you simply add water and the yeast supplied into the bag, wait a few weeks and then dispense directly into your glass and enjoy a fresh brewed pint of your chosen beer.