Finally pulled the shot timer data from my last 200 espressos

I got curious last weekend and hooked up a smart scale to track my shot times for a month straight. Turns out my average extraction was running 32 seconds when I thought I was hitting 27 every time. Found a little stat online from some coffee science blog that said 90% of home baristas overestimate their consistency by at least 4 seconds. Really made me rethink my whole grind setting routine. Has anyone else run actual numbers and been surprised by what they found?

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1 Comment

gonzalez.phoenix3h ago

That 90% stat sounds made up since I couldn't find any real study backing it.