Looking for the perfect water to brew your coffee? You finally found it.  The Espresso Machine Profile is specially engineered for your espresso machines by avoiding the use of water boiler destroying chlorides. It helps protect your machine's boiler while simultaneously providing fantastic shots of delicious espresso.  We recommend using only Espresso Machine Profile in your espresso machine. However, you can also use Espresso Machine Profile for your favorite manual brew method (V60, Chemex, Kalita Wave, etc.) This profile is one of several of ours that meet the Specialty Coffee Association's (SCA) guidelines for improved flavor for coffee. Ingredients: Magnesium Sulfate Calcium Citrate Potassium Bicarbonate Just add one Third Wave Water Espresso Machine Profile stick to distilled or RO (reverse osmosis) water (in the proper size: 1-gallon, 5-gallon, 2-liter), shake, and use to brew your favorite coffee. Your coffee has never tasted so good! Choose from three sizes: 1 Gallon - $17 per box - makes 12 gallons total 5 Gallon - $28 per box - makes 60 gallons total 2 Liter - $20 per box - makes 40 liters total - some people prefer half the minerals so this is a good choice for 'softer' water to add to 1 gallon of water. Experiment to discover your preferences today. NOTE: water containers in the pictures are only shown for reference and are not included with purchase. If you have more questions about our Espresso Machine Profile, check out our support page that has some FAQs!  Fulfilled by Third Wave Water