How do you pull the perfect espresso shot? - Barista at Home Enthusiast - Coffee Forum

I don't know that I have pull the "perfect" shot of espresso yet.  But while breaking it down for my girls it can be as simple as

Grind, dose, tamp, polish, lock it in, pull your shots, nock it out…

Each step in the process has it's areas that need to be tweaked an controlled.  With each new coffee I pull the grind will need some minor tweaking.  I shoot for having my grind somewhere between the consistency of flour and sugar.  I tend to dose an 14 to 18 gram double shot basket, I started out not weighing the dose and went for the full not packed filter basket… dose by weight or by volume is an ongoing debate.  Tamping… "30 lbs" of pressure right?  That is what we have all been taught/read, well it is important to get a great tamp to ensure even water flow and a uniform coffee bed.  To light of a tamp the extraction is fast, to hard a tamp and the extraction is slow… both bad.  Depending on your tamp technique you may or may not need to polish of the top of the coffee bed to ensure a smooth and uniform layer.  Pre warm the group head by running a small amount of water through it, lock in the portafilter and start your extraction right away.  The extraction, a double in 20 to 25 seconds is generally a good shot for me.  Most home machines will pull slower just due to the pump on them being under powered so there are times that I get amazing shots that run 35+ seconds.  Stop the extraction, knock out the puck and enjoy the espresso.

@DanLacher

I'm claiming to pull the perfect shot. I sorta had an advantage though. I have to pull perfect shots each drink on the manual machine at the cafe. AS far as my home machine, no.

Yeah, on a given machine I first work on dialing in the grind and then move onto dosing.  On the commercial machines the temp surfing is not really needed up but I do have a temp surf technique for my home Solis SL70.  Depending on the humidity and temp the grind might need to be adjusted as you go.

In over 18 months on my current machine, 3 years on the previous and another 3 or 4 years with various junk machines, I have pulled the proverbial 'god shot' precisely once.  Consistency is the name of the game and I try to do exactly the same things each time out. 

Cold, filtered water.  Freshly added to the tank (alas, no plumbed in equip, yet).

Measure your beans (some swear by weighing beans, but I haven't quite gone off that deep end yet).

Grind.  This takes daily adjustments, sometimes even during the course of a day.  Ambient temp, humidity, age of beans and quality of beans all mean tweaking your grind setting.  With a proper and consistent tamp (see next point), you want 2 ounces / 25 ml of espresso in roughly 22 to 28 seconds.  "2 in 25" is the mantra.

Tamp – I use an Espro tamper which has a clutch that 'gives' at precisely 30 pounds of pressure.  My routine is one light push to flatten the grounds, one push to just past the clutch point, then 4 light and twisting tamps to polish.

Time your shots.

Taste and reflect; tweak as required/desired.  Some of the data for me may not work for you or your machine.

The god shot was prob a little longer in the pull that I was aiming for.  Might've been 27 or 28 seconds.  I don't recall it pouring picture-perfectly, either (tiger stripping in mid pull, just before blonding).  But the crema, body and taste were otherworldly.  The finish was clear and lingering.  Even the empty cup, 10 minutes later, smelled wonderful.  No bitterness, no acrid smoke or acidic nose.

In time, I will upgrade my roaster, my grinder and my espresso machine, but I may never pull another perfect shot.  I am OK with that.  It's a damned fun game, where even near-misses are terrific.

AofE – are you using a Rocky?  Maybe it's your grinder (though the timing sounds right)?

In addition to adjusting the grind throughout the day, have your tried differnt dosing? Sometimes overdosing makes the espresso flavors fuller.

Remember that different coffees each have their own personal "sweet spot" to be a "god shot" depending on grind, origin, and bean size.

Also, unless you plan to drop $6k on a commercial grade home roaster, buy a Mypressi Twist etc. don't count on producing"god shos", very often. It is possible, just a lot more variables than at a cafe.