What hops did you use? My recipe has Simcoe, Amarillo, Cascade, and Centennial so I'm anticipating grapefruit from the hops but wanted a way to incorporate fresh grapefruit flavor like the GF Sculpin.
I've heard that the white pith on the grapefruit skin can add bitterness. Did you leave that on or remove it. Also when was the zest added?
I used this recipe, but subbed Tomahawk for Warrior, since that's what I had in bulk. Came out great.
I zested 2 Grapefruits, trying not to cut into the white, but maybe I needed to be even more careful. However, I also read that yeast can eat sugars and behind most sugars hides bitterness.
I made a tincture by adding zest into vodka and soaking it for two days or so. I split the batch, bottled half as usual, and added the tincture to the second half, let it sit for another 2 days or so, then bottled that.
As a result, the regular Sculpin (without any tincture added) taste just right "grapefruity", while grapefruit version is a bit too strong on grapefruit, to the point it also has bitterness tones. Next time I may just scale up the hops a bit if I want to get more grapefruit in.
Ingredients
Amt Name Type # %/IBU
11 lbs Pale Malt (2 Row) US (2.0 SRM) Grain 1 80.0 %
1 lbs 4.0 oz Caramel/Crystal Malt - 10L (10.0 SRM) Grain 2 9.1 %
1 lbs Cara-Pils/Dextrine (2.0 SRM) Grain 3 7.3 %
8.0 oz Caravienne Malt (22.0 SRM) Grain 4 3.6 %
1.00 oz Amarillo Gold [8.50 %] - Mash 60.0 min Hop 5 5.3 IBUs
0.50 oz Warrior [15.00 %] - Boil 60.0 min Hop 6 23.5 IBUs
0.25 oz Magnum [12.00 %] - Boil 60.0 min Hop 7 9.4 IBUs
0.25 oz Northern Brewer [8.50 %] - Boil 60.0 min Hop 8 6.6 IBUs
0.25 oz Warrior [15.00 %] - Boil 60.0 min Hop 9 11.7 IBUs
0.25 oz Centennial [10.00 %] - Boil 30.0 min Hop 10 6.0 IBUs
0.25 oz Crystal [3.50 %] - Boil 30.0 min Hop 11 2.1 IBUs
0.25 oz Simcoe [13.00 %] - Boil 30.0 min Hop 12 7.8 IBUs
1.10 Items Whirlfloc Tablet (Boil 15.0 mins) Fining 13 -
1.00 oz Amarillo Gold [8.50 %] - Boil 0.0 min Hop 14 0.0 IBUs
1.0 pkg California Ale (White Labs #WLP001) [35.49 ml] Yeast 15 -
2.00 oz Amarillo Gold [8.50 %] - Dry Hop 0.0 Days Hop 16 0.0 IBUs
1.00 oz Simcoe [13.00 %] - Dry Hop 0.0 Days Hop 17 0.0 IBUs