[Tagging] beer details, draught beer

[Martin Koppenhoefer]

I'd like to note for pubs, cafes, bars, restaurants and similar if
they offer draught beer.

My suggestion would be
draught_beer=yes

or maybe the value could be a selection of brands (or beer types),
seperated by semicolons, which would still be easily valuable (not
"no" or NULL) as long as you are not interested in the details.

Or has anyone already developped a tagging scheme for this?

cheers,
Martin