Medium black. Start with half the water for a long black. Drop a double ristretto in off the sides. Less volume than a long black and thus stronger but more substantial than a straight double ristretto. This is important for me at work after I spend 4 hours sleeping every night because I’m trying to cram too much stuff into my head. Of course, there’s less caffeine but it tastes like jet fuel which is enough to convince my body I’m awake. I chuck 2 mid blacks a day.