Glad to see another convert! Been pulling 99% singles here as well.
I thought singles is one of those things that I experiment for a bit before going back to the typical/habitual doubles. Turned out I've been pulling singles religiously for over 1.5 year and am not planning to go back to doubles.
The single shots don't blonde any earlier for me (if you normalize them based on the brew ratio). If I cut the shot based on blonding I typically get around 18-21 g liquid in the cup.
If you have the funnel, I highly recommend using 9g dose. It's just a tiny 1 gram difference, but seems to make a significant difference in the cup/extraction for me.
The pull this morning - closer to a ristretto. 9g in 16g out, 10s preinfusion 35s actual flow time. <image>
Hey Samuel... I guess you'll take ANY excuse to show off that Aurora, huh?!
beautiful, man... it was my first choice, but I had to settle for a Londinium as Auroras aren't in plentiful supply.
Sorry, by 'blonding earlier' I meant in terms of water quantity (roughly 16g going through for a single), you are right, in terms of seconds the single and double turn out pretty close. That's why my grind is finer on the singles and I have to wait longer for the first beads to appear.
I am actually at 8.5g pretty much all the time now. For my coffee, I have tried going up to 9g but its just a tad too much, the extra coffee is difficult to tamp into the small pocket of the single pf, I feel like I'm herding a bushel full of kittens back into the fold. I can do it, but it takes longer and that early in the morning who needs the aggravation?
since making my delrin funnel, that's not much of an issue, I could compress it a tad, but the lower lip of the funnel blends in with the sides of the pf at about exactly level at 8.5g, so I've been leaving it there; a nice number. 9g would leave some sort of weird depression when I withdraw the funnel that I would have to deal with using the tamp. But I think I share your sentiments exactly; I don't think I'm ever going back to a double espresso, the single, although short lived, gives a reasonable tasting framework and doesn't amp you up too much. If I were younger, I'd say damn the torpedoes and gimme the real McCoy... but for us guys that have to watch all the things that come with *experience* like, oh, say cholesterol, blood pressure etc etc... I try to limit my caffeine input to no more than about 300mg daily. Try. Weekends don't count.