"I did wonder afterwards, perhaps he was genuinely asking me if I was ok. It's not often you come across someone photographing bottles of beers in puddles etc. 😁"

Before I got to the above part, I thought that was what they were meaning too, since your photo showed the bottle in a puddle. Of course I didn't know that meant the same thing as "hello"...till you explained.

The beer is a beautiful color in the glass.