This powder is absolutely essential if you want to keep a clean filter holder. Starts of espresso, slightly bitter taste, it may be due to coffee fat and you get away with Puly. You only have to blindly rinse with about a teaspoon Puly. Sometimes I have to make one more round Afterwards, at the end of the coffee tastes clearer. The screen I also put an order and let the time one hour in hot water with Puly - even here then dissolves some.
