On the other hand, starting with the Kanto region and in the areas to the east of the Lake Hamana, in addition to vinegar, ketchup is often used so that the color of the gelee is red.
逆に関東地方を始め、浜名湖以東の地域では酢に加えてケチャップを使うことが多く、この場合、あんの色は赤である。