Delivered beer without realizing

I picked up stapled shut bag. It was 2 bottles I realized later. They wrote STAR on it. It was from an African restaurant. I thought maybe ginger beer. Internet says Star is Nigerian beer. Guy was of age. I should have been told. The alcohol license info on the grub hub app is just for Ohio and NY. I'm not in either state. Anyone know what I should do next time?. The girl in the restaurant was already belligerent so I didn't ask about it. They should have told me. There was a man there too. I thought they acted weird about it. I'm an older white woman and I get verbally attacked all the time by restaurant employees. Surely this must happen to other drivers.