A rotary latch assembly for a galley cart compartment door is disclosed comprising a barrel member rotating on a spindle and a handle connected to the barrel member. An interfering block outside the barrel member can prevent rotation of the barrel member when engaged with the barrel member, and be displaced by a lock button diametrically opposed with the interfering block. The handle of the rotary latch bears against the door in a locked position to prevent the door from opening, and the button when depressed releases the barrel member to rotate and the handle to pivot out of the path of the door.