I have never used a single portafilter (just thrown out the extra shot when only one is needed), but I completely understand the want to conserve beans. The shop I'm working at now has a single that doesn't fit my tamper ( bought a tamper to use at the shop, which works perfectly for the double baskets) To use the single, I'd have to use the plastic tampers attached to the grinders that everyone else uses, but I can't stand. SOOO, to finally get to my question. Is there a legitimate way to pour the equivalent of a single shot from a double portafilter?
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