A summer in London gave unparalleled opportunities to exploit terroir through local or regional malts, hops, herbs, fruit, and water.
The flowering tops of either the Old World elder tree (Sambucus niger) or the New World black elderberry (Sambucus canadensis). Dry the flowerheads on newspaper for at least three days—long enough for them to get past the stage when they smell like cat piss. Add shortly before the end of the boil—too long and you’ll boil off the aromatics. It’s all about the timing.