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Jeff Hardesty of Narrow Gauge Brewing Company (Florissant, Missouri) shares this homebrew-scale recipe for their sour IPA brewed with lactose and cassia bark, dry hopped with Citra and El Dorado, and aged on blackberries and vanilla beans.
ALL-GRAIN
Batch size: 5 gallons (19 liters)
Brewhouse efficiency: 72%
OG: 1.077
FG: 1.025
IBUs: 30
ABV: 7%
MALT/GRAIN BILL
8.6 lb (3.9 kg) Golden Promise
1.4 lb (635 g) malted oats
1.3 lb (590 g) flaked oats
1.3 lb (590 g) unmalted wheat
3.4 oz (96 g) acidulated malt (for mash pH adjustment)