Partial Volume Boil - Boiling a concentrated wort and diluting with water after the boil to reach full volume.
- Boils can easily be done on a stovetop
- Can be done in 3-4 gallon kettle
- Reduces the amount of time needed to bring to a boil
- Wort chilling times reduced with less volume
- Concentrated wort reduces hop extraction efficiency, more hops are needed to reach bitterness levels of full wort boil (approx. 10-25%)
- Boil overs can be more difficult to clean up
- Increased wort darkening occurs in concentrated wort boils
- All grain brewing requires a full wort boil
Full Volume Boil - Starting with 6 or more gallons and boiling down to a 5-gallon batch size.
- Increased hop utilization over partial volume boil
- less wort darkening
- Ability to brew all-grain batches