SimonPascal said:One gallon is nearly a lab test size. I brewed a common bitter, with fuggle in first wort hopping. East Kent golding in my boil. One thing is: I lost nearly 50% of my water in my 60 min boil. What did I do wrong?
Boil-off is a function of pot shape and boil strength. If you normally boil off a gallon an hour in a 5 gallon batch (pretty standard), you will boil off even more in a one gallon batch (assuming you are using the same pot and full heat).