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igenlodeI broke the big Thermos flask I've been using to make yoghurt in... but I'm not that devastated, because the rubber sealing ring that fits between the glass bottle and the outer casing had become seriously sticky and perished, and the flask was beginning to verge on the unusable anyway. I actually went to the lengths of contacting Thermos to see if it was possible to buy replacement rings, but they replied saying that they don't supply them. You can buy spare cups, if you happen to sit on the cup and crack it, but not the interior seals. Perhaps they don't want to be held liable for leaks caused by incorrectly installed sealing rings... Anyway, the only reason the glass bottle broke was because the ring had perished so much that milk got into the inside of the casing every time it was used, so that I had to remove the glass in order to wash it. It was no longer useful for anything other than standing in a cupboard making yoghurt, since it was guaranteed to leak if carried around in any non-vertical position.
It was an expensive flask when it was new, and I'm not sure I shall bother to replace it; I have a little stainless steel half-pint flask, which doesn't keep drinks hot for half so long, but I don't need a family-sized bottle of tea. Not least because I don't drink tea, so only occasionally use it for supplies of chocolate in winter!
I might look for one of the cheap modern wide-necked 'food flasks', though, for yoghurt-making purposes. One where it's actually possible (a) to get the yoghurt out once it has set inside and (b) to get a brush through the neck to clean the interior afterwards. It doesn't need to retain liquid at boiling point for hours, just to keep it sealed and mildly warm overnight in an unheated environment.
It was an expensive flask when it was new, and I'm not sure I shall bother to replace it; I have a little stainless steel half-pint flask, which doesn't keep drinks hot for half so long, but I don't need a family-sized bottle of tea. Not least because I don't drink tea, so only occasionally use it for supplies of chocolate in winter!
I might look for one of the cheap modern wide-necked 'food flasks', though, for yoghurt-making purposes. One where it's actually possible (a) to get the yoghurt out once it has set inside and (b) to get a brush through the neck to clean the interior afterwards. It doesn't need to retain liquid at boiling point for hours, just to keep it sealed and mildly warm overnight in an unheated environment.