I brewed a kolsch with the below recipe. Let fermentation go for 4 weeks down to 1.010 then for clarity lagered in a fridge for 20 days. I bottled the batch of 4 gallons with 4oz of priming sugar, maybe a shade less then 4gallons due to trub loss but it was not dramatic
These beers after 3-4 weeks turned into firecrackers. Extremely over carbed and 9 of the batch exploded so i tossed the rest as I didn't want anybody getting hurt.
When I tasted there was no hint of sourness or infection but due to that gravity reading over a few days I am puzzled at why they turned out as they did the bill was very simple.
I might have primed a bit more then needed but maybe .5oz more then needed.
Any ideas?
malt & fermentables
% LB OZ MALT OR FERMENTABLE PPG °L
94% 8 0 Pilsner Malt 38 2 ~
6% 0 8 Munich Malt 37 9 ~
8 8
Batch size: 5.0 gallons
Original Gravity
1.054 measured
(1.048 estimated)
Final Gravity
1.010 measured
(1.012 estimated)
Color
3° SRM / 5.91° EBC measured
(4° SRM estimated)
(Yellow)
Mash Efficiency
84% measured
(75% used for O.G. estimate)
hops
USE TIME OZ VARIETY FORM AA
boil 60 mins 0.2 Horizon pellet 11.1
boil 30 mins 1.0 Ultra leaf 9.0
Boil: 4.0 avg gallons for 60 minutes
Bitterness
29.4 IBU / 2 HBU
: Tinseth
BU:GU
0.61
yeast
White Labs German Ale / Kolsh (WLP029)
ale yeast in liquid form with medium flocculation and 75% attenuation
Alcohol
5.9% ABV / 5% ABW
(4.8% est. ABV / 4% est. ABW)
Calories
158 per 12 oz.
misc
USE TIME AMOUNT INGREDIENT
boil 15 min 1 tsp Irish Moss
These beers after 3-4 weeks turned into firecrackers. Extremely over carbed and 9 of the batch exploded so i tossed the rest as I didn't want anybody getting hurt.
When I tasted there was no hint of sourness or infection but due to that gravity reading over a few days I am puzzled at why they turned out as they did the bill was very simple.
I might have primed a bit more then needed but maybe .5oz more then needed.
Any ideas?
malt & fermentables
% LB OZ MALT OR FERMENTABLE PPG °L
94% 8 0 Pilsner Malt 38 2 ~
6% 0 8 Munich Malt 37 9 ~
8 8
Batch size: 5.0 gallons
Original Gravity
1.054 measured
(1.048 estimated)
Final Gravity
1.010 measured
(1.012 estimated)
Color
3° SRM / 5.91° EBC measured
(4° SRM estimated)
(Yellow)
Mash Efficiency
84% measured
(75% used for O.G. estimate)
hops
USE TIME OZ VARIETY FORM AA
boil 60 mins 0.2 Horizon pellet 11.1
boil 30 mins 1.0 Ultra leaf 9.0
Boil: 4.0 avg gallons for 60 minutes
Bitterness
29.4 IBU / 2 HBU
: Tinseth
BU:GU
0.61
yeast
White Labs German Ale / Kolsh (WLP029)
ale yeast in liquid form with medium flocculation and 75% attenuation
Alcohol
5.9% ABV / 5% ABW
(4.8% est. ABV / 4% est. ABW)
Calories
158 per 12 oz.
misc
USE TIME AMOUNT INGREDIENT
boil 15 min 1 tsp Irish Moss