I've never tried rinsing with cold water before pouring as some of you mention. I'll have to try this and see what it does!
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Just tried rinsing with cold water, here's my impression. Seems to me to have inhibited foaming during the pour, leaving less, not more, head, and my pint too gassy. I believe in forming a nice foam stand at the start, which will remain as the pint is drunk as long as your beer has the colloidal cojones to maintain it, although this extra gas may keep generating lacing as the glass goes down.* But it's all out of balance and looks kind of decapitated. Not worth the extra step; as my pour wasn't broke, I ain't gonna fix it. (You know, I always figured the old ritual of the bartender rinsing the glass on a fountain, as well as knocking off the head with a beer comb, was just theatrics to make an inflated price seem more plausible.)
*[EDIT Nope, regular pour gives superior lacing too.]
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