Hi, my mum has mobility issues so now makes herself a flask to drink rather than struggle to walk to the kitchen several times a day
Can anybody advise the best way to clean flasks? She has Brown build up inside, I've tried bicarbonate which is ok but doesn't fully bring it back to its original shiny stainless still state
Also when I've emptied her flasks when cold sometimes a brown lump comes out, this morning she told me she hadn't had a drink in the night (she likes a drink when she wakes which is frequent) as it tasted funyy, i just emptied it and the tea was a very watery subsistence and again a brown congealed lump dropped out, I can only assume it's the milk but her milk isn't off?
Any advice fearfully received!!