Came across this today, it's not done on an expobar but it's pretty much the same
Kostverlorenvaart: Espresso brew pressure profiling: dual OPV on the Rocket Giotto
Thinking of giving it a crack on my old girl, spruce her up a bit
Anyone done anything similar to theirs?
Kostverlorenvaart: Espresso brew pressure profiling: dual OPV on the Rocket Giotto
Thinking of giving it a crack on my old girl, spruce her up a bit

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