Yep, my favorite coffee bar uses only ~15g of grounds per shot, they "tune" for each type of bean. But it's true you don't need to go past 20g for a standard si

Yep, my favorite coffee bar uses only ~15g of grounds per shot, they "tune" for each type of bean. But it's true you don't need to go past 20g for a standard size portafilter. The volume yield is still in the range of a double in the high 30's, so it works just fine even without milk. I would add that virtually all coffee you get at an independent cafe or even Starbucks is going to be speciality coffee.