UNM wrote:
...Seriously, regarding safety (...hygiene...) of wiping the filter basket, surely it wouldn't be an issue due to the high extraction temperature?....
Correct, but do use a cloth that is only used for that purpose and nothing else, and changed over frequently. Also if its unhygienic to wipe out, what about all the barwristers out there that use their hands / fingers in the whachacallit technique to evenly fill the filter at dosing, then the same fingers to clear the lugs, rim and spouts of the group handle to clear excess grinds before inserting the group handle. Again this is taken care of by the over 90 degree brew water, even if it may not look hygienic. Some favour wiping because when you flush with water instead, you can leave drops of water residue in the bottom of the group handle that goes in with the next coffee and / or the wetness in the filter reacts with the grinds before brewing (although I dont believe in that black magic and of we are going to go there then theoretically that should be a further aid to "preinfusion"...its ok to talk about all this academic stuff but when alls said and done, can anyone taste the difference on a one on one comparison and then categorically state that any diff was due to the one that was flushed instead of wiped?????) Wiping is "dry". Wiping is also quicker (due to not shaking the excess water out of the group handle and wastes less water which is an issue, if your drip tray is not plumbed to the drain but into a container that could cause an airlock and overflow of dregs. Otherwise, it doesnt matter which way you do it just personal preference and individual opinion governed by where anyone got their barwrister training from. In short, its a KoffeePolitikal discussion where if you dont adopt anyone's purist opinion, you will most probably be perceived not to know much and can expect to be ostricised to Koffee Limbo by all ;D PS I flush with water because when I am cupping I try and remove any trace of the previous coffee including any possible residue of wet coffee liquor in the bottom of the group handle. But that's just me and I am comparing different coffees or equipment adjustments whereas in a cafe you are invariably using the same throughout.