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Koji Rice Beer GF - Mugwort

127 calories 11.6 g 330 ml
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Beer Stats
Method: Partial Mash
Style: Experimental Beer
Boil Time: 0 min
Batch Size: 3 liters (fermentor volume)
Pre Boil Size: 3 liters
Post Boil Size: 3 liters
Pre Boil Gravity: 1.042 (recipe based estimate)
Post Boil Gravity: 1.042 (recipe based estimate)
Efficiency: 70% (brew house)
Source: Specify_jai
Calories: 127 calories (Per 330ml)
Carbs: 11.6 g (Per 330ml)
Created: Monday October 13th 2025
1.042
1.008
4.5%
0.0
18.1
n/a
7.66
 
Fermentables
Amount Fermentable Cost PPG °L Bill %
150 g American - Medium Roasted Millet Malt - Gluten Free150 g Medium Roasted Millet Malt - Gluten Free 25 36 23.8%
30 g Rice Hulls30 g Rice Hulls $ 5.33 / kg
$ 0.16 		0 0 4.8%
150 g Blue Lake Milling - AU - Blue Lake Milling - koji flaked rice150 g AU - Blue Lake Milling - koji flaked rice $ 8.00 / kg
$ 1.20 		40 15 23.8%
300 g Blue Lake Milling - AU - Blue Lake Milling - Flaked Rice300 g AU - Blue Lake Milling - Flaked Rice $ 8.00 / kg
$ 2.40 		40 20 47.6%
630 g / $ 3.76
 
Other Ingredients
Amount Name Cost Type Use Time
15 g mugwort $ 0.06 / g
$ 0.90 		Water Agt Mash 0 min.
$ 0.90
 
Yeast
Bluestone Yeast Co. - BSY-A005 Brussels
Amount:
20 Milliliters
Cost:
$ 0.15 / ml
$ 3.00
Attenuation (custom):
80%
Flocculation:
Low
Optimum Temp:
-18 - -18 °C
Starter:
No
Fermentation Temp:
22 °C
Pitch Rate:
0.35 (M cells / ml / ° P) 11 B cells required
$ 3.00 Yeast Pitch Rate and Starter Calculator
Priming
CO2 Level: 0 Volumes
 
Target Water Profile
Balanced Profile
Ca+2 Mg+2 Na+ Cl- SO4-2 HCO3-
0 0 0 0 0 0
Mash Chemistry and Brewing Water Calculator
 
Mash Guidelines
Amount Description Type Start Temp Target Temp Time
1.5 L steep rice and koji rice Steeping 20 °C 60 °C 45 min
1.5 L sparge, add malt, boil Batch Sparge 60 °C 100 °C 55 min
1.5 L add mugwort Infusion 100 °C 100 °C 5 min
Quick Water Requirements
Water Liters
Heat water added to kettle 3.6
Mash volume with grains (equipment estimates 3.6 L) 4
Grain absorption losses (steeping) -0.6
Mash Lauter Tun losses -0.9
Pre boil volume 3
Boil off losses  
Post boil volume 3
Going into fermentor 3
WARNING: Kettle losses > 2% detected which throw off OG calculation for extract/partial mash recipes in batch target 'fermentor' mode. Solution: Reduce kettle losses, misc losses and hops absorption in equipment profile, OR set batch target to 'kettle' and do a full wort boil. See batch target FAQ.  
Total: 3.6  
Equipment Profile Used: System Default
 
Notes

Experimental brew comparing use of non-toasted koji rice/mugwort vs toasted koji rice/hops for effects on flavour, body and head retention, as well as the citric acid level as a by product of the koji

koji strain: Aspergillus kawachii (non pigmented strain of black koji)

Will update recipe when brews are completed, or as I go during the process

Oh, this is my first beer. I take no accountability for terrible beer if you attempt this recipe

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  • Public: Yup, Shared
  • Last Updated: 2026-01-13 06:54 UTC