While writing this scene when Garrus brought wine, Bioware artists seem to forget that the wine would only for Shepard or only for Garrus due to their DNA difference.
Anyway when I finished drawing this, the first thing that popped into my head was - Daaamn, Garrus you're good, you drink like a boss. Total pro. Respect.
Garrus and Shepard (c) : BioWare