Maris Otter Amarillo Partial Mash Recipe

byronyasgur · Nov 17, 2016

This is my first stab at creating a partial mash recipe. It's mainly Maris Otter and Amarillo, just a bit of caramalt; I'd love if anyone saw anything wrong with it that they could point it out; or any suggestions etc.

Title: Maris Otter Amarillo IPA

Brew Method: Partial Mash
Style Name: American IPA
Boil Time: 60 min
Batch Size: 12.5 liters (fermentor volume)
Boil Size: 7 liters
Boil Gravity: 1.104
Efficiency: 75% (brew house)

STATS:
Original Gravity: 1.058
Final Gravity: 1.010
ABV (standard): 6.4%
IBU (tinseth): 53.17
SRM (morey): 7.03

FERMENTABLES:
1.5 kg - Liquid Malt Extract - Maris Otter (55.6%)
1 kg - United Kingdom - Maris Otter Pale (37%)
0.2 kg - German - CaraAmber (7.4%)

HOPS:
30 g - Amarillo, Type: Pellet, AA: 9.6, Use: Boil for 60 min, IBU: 35.85
40 g - Amarillo, Type: Pellet, AA: 9.6, Use: Boil for 10 min, IBU: 17.33
40 g - Amarillo, Type: Pellet, AA: 9.6, Use: Boil for 0 min
80 g - Amarillo, Type: Pellet, AA: 9.6, Use: Dry Hop for 5 days

MASH GUIDELINES:
1) Infusion, Temp: 64.5 C, Time: 45 min, Amount: 5 L

YEAST:
Fermentis / Safale - American Ale Yeast US-05
Starter: No
Form: Dry
Attenuation (avg): 81%
Flocculation: Medium
Optimum Temp: 12.22 - 25 C
Fermentation Temp: 16 C
Pitch Rate: 0.75 (M cells / ml / deg P)

rhys333 · Nov 18, 2016

Looks decent, but if you have more Amarillo I'd reduce your 60 minute to around 25 IBUs and load up more on the 10 and 0. If the IBUs aren't high enough, you could move the 10 to 15. Holding back a portion of your extract until FO will also help boost IBUs if needed.

TooDogly · Nov 18, 2016

You are mashing with 5L of water, and your boil is 7L. Just make sure to sparge your grains after mashing to get to the 7L boil volume. And like rhys333 said, add your extract after the boil is done. Since this is an IPA you will want to keep your IBUs up there. You could extend the boil to 75 min (adding first hops at 75min) and that will raise the IBU if wanted.

Wish you luck!