arossphoto wrote:Sorry if this is a stupid question, but is it normal to have a few grounds in the bottom of the cup or is this an indication of a problem?
Looks normal, but honestly I haven't looked as closely as you. It's still worth checking for possible grinds contamination during dosing or tamping. For example, dragging the spouts through the grinds for spouted portafilters or touching the bottom of the basket to grinds for bottomless portafilters. Grinds have a way of getting everywhere...
On a related note, barista competitors are allowed to tamp directly on the countertop and then wipe the spouts to remove an errant grinds. I work under the assumption that any horizontal surface is a bacterial haven and instead tamp with the crook of the spout against the countertop's edge so the spout never touches anything. Less chance of grinds contamination, less chance of any contamination.