Random Riddle: Say What?

The following pairs of words can be unscrambled to make two words that go together, like “this & that.” All pairs follow the same theme. Can you determine what they say?

DARK BOG = ______ + ______
COW MEAT = ______ + ______
ASHES SINK = ______ + ______
BRANDY YOKE = ______ + ______

 

Random Riddle: Say What?