Yep, plus water. Sometimes I sub a stout for the water. It just depends on how badly I might want to drink it instead!
I had not had a fresh stout in years. I went into the local brew house and asked for what dark beer you brew on the premises (they had a large selection of commercial bottles and drafts)
He poured a stout. It was the best beer I had in years. Bottled stout, Guinness or beer cannot compare. A fresh stout like that would be great in bread. Being non pasteurized and full of fresh ferments