Currently, I average 10 hours for a 60 to 90 minute boil (this includes step mash recipes). This is start to finish including cooling the wort, filtering the wort, pouring the wort into the fermenter, adding oxygen to the wort, pitching the yeast and the dreaded, but necessary, cleaning up (cleaning everything, dumping grain and hops, etc).
That's my time and I take even longer, due to inexperience. Yesterday I begun at 15:40 or so and at 2:30 I finished cleaning.
That includes measuring the grain, wetting them, milling them, measuring salts and acids, doing a multi-step mash (55, 59, 63, 70, and mashout at 78 °C which were called by my recipe, using Pils malt), sparging, 90 minutes boiling, cleaning the immersion cooler, 30 minutes cooling with the immersion cooler (I was already very tired and begun considering a plate chiller), 30 minutes whirlpool and cleaning of most sticky stuff after the work (kettle, pipes). Taking all the density measurements of the various samples with the refractometer. Going to the computer to correct or improve my written step-by-step procedure, sanitizing a pipe and a tap with the microwave etc.
Being a beginner, I want to have everything ready and then only execute a script. I don't want to mix chemicals while mashing or to clean the fermenter while boiling, or look for parts while the clock is ticking. Yesterday I took an hour just to prepare the various complements (salts, acid, carragenen, anti-foam which I did not use, cups for density samples, each with a label, I'm slow).
I want to improve on this aspect. I could, for instance, measure the salt and acid additions
while the water heats up, not before. And I could clean the fermenter while the beer boils, because I saw that, apart maybe the first minutes, beer doesn't come out better if you watch it boil
.
I am working to my "script" so that I can comfortably insert into the dead phases certain activities.
The ramp-up to boil is slow in my electric kettle, also. Plenty of dead time which could be used better.