How do you get rid of coffee stains in a Thermos flask?

@bascht Sterilising solution. In the UK you can buy this wherever you'd buy home brewing stuff.

@bascht they make special chemicals, but if you wanna go more natural use lemon and salt, and a little boiling hott water and swish it around

@JerryRiggs I think I've already reached the end of what's possible with natural solutions. 😁 I had it set up with baking powder and vinegar over night, but that didn't do the trick.

@bascht Like the stain of sin, these can never be washed away by human toil.

Sign in to participate in the conversation
The olde Yakshed

This is a special little place in the Fediverse for a small group of purveyors of finest yak wool.