So I decided to try my hand at a partigyle brew, and I figured what better style to do this with than an English brown ale and a mild ale. I’ve been meaning to do this for a few years now, but never sat down to actually calculate a recipe. I sat down with my brown ale recipe (Nutty Brown Dog) and my mild recipe (Muddy Paws Mild), and tried to figure out the commonalities between them so I could formulate a common recipe to brew them both. They both had Maris Otter and chocolate malt, so that part was easy. The crystal malts weren’t too dissimilar – crystal 80 and Special B versus crystal 60 and crystal 120. But the brown ale has special roast and amber malt, while the mild has mild malt and aromatic malt.
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Nutty Brown Dog
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Muddy Paws Mild
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9 lb
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Maris Otter
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3 lb
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Maris Otter
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8 oz
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Crystal Malt 80
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2 lb
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Mild Malt
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8 oz
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Special Roast
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1 lb
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Crystal Malt 60
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8 oz
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Amber Malt
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8 oz
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Aromatic Malt
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4 oz
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Chocolate Malt
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4 oz
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Crystal Malt 120
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3 oz
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Special B Malt
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3 oz
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Chocolate Malt
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OG:
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1.052
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OG:
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1.035
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SRM:
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22.8
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SRM:
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19.1
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I weighed my options, and in the end I decided to base this recipe off of the mild ale.
To formulate my recipe, I assumed I would obtain 65% of my sugar in the first runnings and 35% in the second runnings. I’ve been analyzing the gravity of my first and second runnings for a few years now, and I typically see 2:1 ratio of the gravity between the first and second runnings. I batch sparge, so I figured this would be predictable of a partigyle. These numbers are similar to those reported by Randy Mosher in Brewing Techniques where he says to expect ~58% of the sugar in the first runnings, and ~42% in the second runnings. I formulated my recipe for an 11 gallon batch assuming 70% efficiency:
9lb Maris Otter
5lb Mild Malt
2lb Crystal Malt 60
8 oz Crystal Malt 120
6 oz Chocolate Malt
1lb Aromatic Malt
OG: 1.042
SRM: 19.6
Given the 65%:35% ratio of first and second runnings, that translates into the following for each:
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First Runnings (Brown Ale)
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Second Runnings (Mild)
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5.85 lb
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Maris Otter
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3.15 lb
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Maris Otter
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3.25 lb
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Mild Malt
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1.75 lb
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Mild Malt
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1.3 lb
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Crystal Malt 60
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0.7 lb
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Crystal Malt 60
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5.2 oz
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Crystal Malt 120
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2.8 oz
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Crystal Malt 120
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3.9 oz
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Chocolate Malt
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2.1 oz
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Chocolate Malt
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0.65 lb
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Aromatic Malt
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0.35 lb
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Aromatic Malt
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0.5 oz
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Challenger 8.3% (60 min)
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0.5 oz
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Kent Golding 5.5% (FWH)
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0.5 oz
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Kent Golding 5.5 %(60 min)
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0.5 oz
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Kent Golding 5.5% (15 min)
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0.5 oz
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Kent Golding 5.5% (0 min)
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OG:
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1.055
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OG:
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1.029
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SRM:
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25.4
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SRM:
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13.7
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IBU:
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27.8
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IBU:
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11.4
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