When the term 'Kake Udon' was specifically used to distinguish it from other Udon noodles, it indicated Udon noodles in hot soup broth without toppings (the same Udon noodles as 'Su Udon' in the Kansai region).
特に他と区別して「かけうどん」と呼んだ場合のみ、つゆだけをかけたもの（関西で言う「素うどん」と同じもの）を指す。