Dark Field Lighting
I practiced Dark Field Lighting a little today. The idea is to have your subject, a slightly larger dark thing (I used a t-shirt draped over books) behind the subject, and then a large light source behind it all.
The smaller v-cards in front of and to the side of the subject just give something to reflect. They don’t really act as fill, but rather are there to generate the vertical highlights you can see on the glass and stem.