Boil some fresh water, then empty the jug, spoon in the coffee and slowly pour on the boiled water. Stir and brew for a few minutes, then strain into cups or pots.

One egg coffee recipe I saw called for 20 grams of ground beans, which is enough for two standard cups. ... The egg-and-coffee mixture likes to boil over if heated at too high a rate.

However, researchers are still looking for more evidences to prove the same. On the other hand, filtered coffee may have high levels of caffeine as compared to boiled coffee; therefore, if you are ...