After the pleasant Brew#3 I tried another run with almost the same recipe. Got the yeast and malt from @jwebster (at a bargain price!). Unfortunately something happened during fermentation and the beer got a weird metallic aftertaste that Martin thought was probably acetobacter infection from the fermenting bin. Shame as it was my first brew with the King Keg, and the clarity and head of the beer were perfect! This was also my first brew done in an evening after work – 6 hours from start to finish.
Brew#4 brew notes for reference.