Ama ebi is the Japanese word for "sweet shrimp." Some people enjoy these prawns super fresh. When the prawns are live and freshly peeled, they taste almost crunchy. When you let the prawns sit in the fridge overnight, peeled, the sugars in the prawns begin to develop and the prawns because more sweet and the texture becomes sort of "dewy". I wouldn't recommend this recipe for the squeamish.