啤酒瓶底的沉澱物一到瓶頸部位，就不要往外倒啤酒了。此時你的一杯啤酒會金燦燦地發亮，酒泡鼓出酒杯口，而又不會溢出杯外。
As soon as the sediment starts creeping up the shoulder of the bottle, stop pouring. You should now have a glass of star-bright beer with a head(of foam) that stands proud of the glass but does not overflow.
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