in the anticipation

It's not something that I expect anyone else would ever try unless they were desperate, but just in case, never try and put coffee into a food flask which has only ever contained food which has been strongly flavoured with garlic, such as pepper-and-carrot salad with oil-and-balsamic-vinegar-and-garlic dressing. Even if it's been washed as thoroughly as possible after each use, even though washing is aided by the wide neck, allowing all of the inside to be scrubbed rather than just the inch down from the neck for normal flasks. Even if it's never been left without being washed overnight after the contents were eaten at lunch (though perhaps after havng been constructed and enflasked the night before being eaten so that it could spend the night in the fridge getting nice and cold). The coffee didn't particularly taste of garlic but it tasted sufficiently unlike nice coffee to make me think I was going to be sick for several minutes after testing it with a single sip when the emergency half-size previously-used-for-coffee flask had been emptied. I never tried the remains of the previous day's coffee which had been sitting in the flask overnight after I couldn't be bothered retrieving it after the mosque lunch yesterday but there was a possibility it would still have been warm after spending the afternoon and night in my locker, two feet from a radiator which is still obstinately on in June.