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The boil is an important part of the beer making process. It accomplishes two main tasks

  1. Sanitizes the wort
  2. Extracts bitterness, flavor and aroma from the hops

When boiling hops are added in stages to extract different qualities.

Adding hops early in the boil (typically 60 to 90 minutes) extracts bitterness from the hops, this occurs during a process called isomerization.

Adding hops late in the boil (typically 15 or less minutes left) extract flavors from the hops.

Adding hops extremely late in the boil (typically with 5 or less minutes left) extract hop aroma's.

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