Isn't distilled water bad for espresso machines?Updated a year ago

Yes it is! At higher temperatures and higher pressures, especially in espresso machines, distilled water or any form of empty water can become corrosive. This can cause damage to your machine's boiler and shorten its lifespan dramatically.

However, if you add minerals to that distilled water, it is no longer distilled. It instead is a uniquely made mineral water designed specifically to protect your machinery and enhance your coffee's flavor.