Hops Bitterness (Tools)
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Description

A calculator used to determine the bitterness of up to three hop additions in International Bitterness Units.

Use

bulletChoose the Hops Bitterness command on the Tools menu.
bulletSet the final volume, boil volume and estimated final gravity for the beer.
bulletAdd first, second and third hops with appropriate amounts and boil times.
bulletView the calculated IBUs and AAUs for each hop addition as well as the total at the top.
bulletModify the calculation with selections from the Hop Adjustments section at the bottom of this view.

View Description

Volume and Gravity of Wort

bulletBatch Size - The final batch size or finished volume for this batch.
bulletBoil Volume - The amount of wort being boiled.  For extract brewers this is often smaller than the total batch size.
bulletEstimated Original Gravity - An estimate of the original gravity for the beer.  This number is used to estimate the gravity of the boil which has a significant effect on hops utilization in the boil.

First Hop, Second Hop, Third Hop

bulletHops - The name of the hops.
bulletWeight - The amount of hops to add.
bulletPick Hops - Button displays the table of hops to choose from.  Selecting a hops in this list will insert the profile of this hops into the hops dialog.
bulletAlpha - The percentage of alpha acids in the hops.  High alpha hops impart more bitterness to the beer.
bulletBoil Time - The amount of time to boil this particular hops.
bulletInternational Bitterness Units (IBU) - The primary measure of overall beer bitterness.  At the top of the screen the total bitterness is displayed.  The IBU contribution for each hops is also displayed.  IBUs are calculated using the bitterness formula displayed in the Hop Adjustments section.
bulletAlpha Acid Units (AAU) - A simpler and less accurate measure of bitterness than IBUs.  Defined as the number of ounces of hops times the alpha content divided by the volume of wort produced. 

Hop Adjustments

bulletFormula for Bitterness - The formula to use in calculating the IBU values.  See Bitterness in BeerSmith for a technical discussion of the various formulas.
bulletAdjust First Wort Hops - Flag that applies the First Wort Hop adjustment to the first hops used.  First Wort hopping is a method where hops are added to the boiler with first runnings from the lauter tun.  The additional steeping time increases bitterness and aroma slightly.
bulletHops Type - Applies the appropriate hops type adjustment to the IBU calculation.

 

 
 
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