is this the goal for a double espresso shot , I am weighing each porta-filter with 18 g of coffee in a vst basket, then installing it on a Lacimbali m21 junior boiler volumetric and getting 60 g of coffee in the cup after approx 25 seconds ?
Suggestions???

A good rule of the thumb is that the beverage weight should be twice the dose.

So grind finer and aim for 35-40g in the range of 25-30 seconds.

After you find your sweet spot then start to experiment with grinding even finer and do a 30g shot in a 30-35 seconds and see if you like a more concentrated beverage.

Play with that and learn what you prefer for each coffee but the general rule of 1:2 in 30 seconds is a good place to start.

Kfir.

I just read a post for 18 gr of coffee and a 30 G shot , so right now zeroing in on it as I got my volumetric to 60g 18g coffee output 32 g at 39 seconds so next going a little coarser for a shot closer to 30 sec
Thanks Bill

moreshots wrote:Suggestions???

You may want to spend an evening viewing/reading some of the helpful resources on HB:

• Newbie Introduction to Espresso (video series)
• The Home Barista's Guide to Espresso (beginner to intermediate)
• How to Adjust Dose and Grind Setting by Taste (nearly idiot-proof dialing in instructions)
• Brewing ratios for espresso beverages (accepted definitions)

There's a few others mentioned under Recommended reading, but they're geared towards people who may not even know the difference between an "espresso maker" and "espresso machine". If these don't answer your questions, try the forum search tips. If that also fails, then post questions/videos/descriptions of what you've tried and the results.

While the above suggestions may seem a little pedantic, I've noticed that searching on even mundane questions like "What is a double espresso?" yields interesting matches, including answers to the question in your original post.

thank you very much
this has helped a lot

Bill