In the UK, eating roast beef for lunch Sunday afternoon tradition (= Sunday dinner) is treated as a main dish, accompanied by Yorkshire pudding in this case. As is the staple food of the Japanese sense of carbohydrates such as Yorkshire pudding-based, but roast beef and side dish, a staple in the UK and roast beef, Yorkshire pudding is an accompaniment.
In the past most poor households, increasing the amount of stomach meets Yorkshire 童貞, I have to save the amount of roast beef, essentially, even if there was a reversal of the relationship with the staple side dish.