9 Rules for How to Make a Perfect Cup of Coffee
Rule 8. Beware The Heat
Water that is too hot will extract compounds in the coffee that are bitter rather than pleasant. The proper brewing temperature is 200°F, or about 45 seconds off a full boil. (Most good coffeemakers regulate this automatically.) Once brewed, don’t expect coffee to hold its best flavors for long. Reheating, boiling or prolonged holding on a warming platform will turn even the best coffee bitter and foul-tasting.
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