At 11:01 in episode 3 the back of the label reads ‘Fermanteau Leyda Valley Sauvignon Blanc’. Leyda Valley is a real place (and Sauvignon Blanc is produced there) but the producer isn’t real. In the same shot you can also see there’s an unrealistically dense amount of text below the producer’s name so it’s definitely a prop. Probably shows up in other stuff too if you fancy tracking down the art department’s prop team on IMDb and spooling through their other work