Brewing software

Northern Brewer General
1

I just did a CDA with ProMash and my IBUs came up at 113.6
I did the exact same recipe on BeerSmith and the IBU’s came out at 30.

Anyone have a clue what the problem may be?

Here’s my recipe

4 Gal. Batch O.G. 1.074

• ½ lbs. Carafa Special III
• ½ lbs. Crystal 60L
• 6.6 lbs. Light DME. I added bulk at beginning of boil, 1 lbs. in last five minutes.

Hop Schedule
• ¾ oz. Citra(14% Leaf) – FWH
• 1 oz. Magnum(12.8% Pellet) – 60 min. (Chinook would also work)
• 1 ½ oz. Simcoe – Flameout
• 1 ½ oz. Citra – Flameout (Amarillo, would also be a good substitute)
• 1 ½ oz. Simcoe – Dry hop, last 5 days of Secondary
• 1 ½ oz. Citra – Dry hop, last 5 days of Secondary

2

The scale may be set differently in each program. Tinsenth will give you a lower ibu than rager, but the difference isnt as big as you have shown. Double check your numbers and alpha acids for each hop.

3

I entered your recipe in Beersmith, Just the Magnum’s @ 60 Min is over 30 IBU. FWH with the Citra’s in theory would put you over 50. Definitely something going on with your software.