OK, tweaked the recipe and brewed today.
Water treatment was according to this forum's calculator:
- 30ml CRS (1ml CRS/Litre liquor);
- 0.2 gypsum in mash;
- 0.4 gypsum boil, 5g Epsom salts boil
Given the total alkalinity of my tap water at 218, this should give a sulphate-forward water for a good hop profile.
As you can see, I used 20g Celeia at 10 minutes, and an additional 20g of Celeia as a hop stand (80C for 30 minutes). This change to the hop schedule was influenced by James Morton's English IPAs.
The brew day went just fine, with the only unplanned issue being the equipment temperature loss at strike being higher than usual (it's winter, idiot!).
I measured mash pH for the first time, and got 5.4 - which I'm happy with.
I got 20l at 1044. I could have pulled through 23Lt from the boiler, but wanted to keep the wort really clean and as bright as possible. Photos on next post.