What is Cơm tấm?
'Broken rice' gets its name from the fact the rice didn't meet the standards for exporting (usually because the grains were too small, that's all). Traditionally it was served as a cheap meal along with various meat or fish. Even though the name of the dish just refers to the rice part, it's the accompanying meat which makes or breaks it. It seems like grilled pork is the most popular option.