Guinness gif!

Omg that’s gorgeous

(below gleaned from wiki)

  1. For proper foam formation, it’s also important to dry the glass thoroughly after washing. Any water in the glass can prevent excitement of the gas by covering designs set in the bottom of the glass, thus making the beer flat.
  2. Conversely, some styles such as Belgian witbier benefit from being poured into a wet glass to control the often abundant head.
  3. In general, wheat tends to produce larger and longer-lasting heads than barley.
  4. At least one study suggests that the head assists in transport of beer after pouring by damping oscillation (sloshing) and converting vertical movement into horizontal movement.

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