Flemish stew looks excellent.

There is a Guinness beef stew I've been wanting to make that is similar.

I think most stews of that kind call for like one bottle of beer, probably like 12oz to 15oz. It's mostly for flavor.

The easiest way to add flour is to make a slurry first, then it is easier to stir in without clumping. About 2-3 TBS.