Overview Removes coffee stains from batch brewer filter baskets and servers. Can also be used to make a soaking solution to clean other equipment, parts and accessories. Made from all-natural, biodegradable ingredients. Contains no phosphates. Odorless. Eliminates coffee residue and oils from espresso machine group heads, valves and lines. Keeps screens and filters clear for even extraction. 500 g jar (18.5 oz). How to Backflush Insert blind filter in portafilter and add up to 1/2 teaspoon (3 g) of Cafiza Powder. Insert portafilter into group head. Activate brew cycle for 10 seconds. Stop 10 seconds. Repeat 5 times. Remove portafilter and activate brew cycle and rinse portafilter in stream of water from group head. Re-insert portafilter without cleaning powder. Activate brew cycle for 10 seconds. Stop 10 seconds. Repeat 5 times. Replace blind filter with standard basket. Make a cup of espresso to remove any traces of cleaner. Discard espresso - do not drink.