I use Professional Brewer's Wash like I would any other powder cleanser. Works amazingly well. Wet the stainless, sprinkle, scour and then let sit for a minute or two. Rinse with hot water and appreciate the sparkle.

​

BTW - I'm not sure if its available in Europe or not.

Highly recommend this for cleaning hardware scale in kettles. Use it for my wife's kettle at home where we have somewhat hard water.

https://www.amazon.com/Five-Star-PBW-Non-Caustic-Alkaline/dp/B0064O7XBA