Where in the Rema?
And I am very skeptical about the Mishnah Brurah. My father, shlit”a is a baki in Mishna Brurah (and incidentally, drinks Litvak style, enough to get slightly happy, and a very carefully measured amount). If it was anywhere in the Mishnah Brurah as a psak and preferred derech from the Chofetz Chaim, I can guarantee I would have heard of it as a kid at my parents’ seudah.