What serves as the base wrap in the "Crispy Prawn Roll"?

The base wrap in the "Crispy Prawn Roll" is soy paper. Soy paper, made from soybeans, is often used in sushi and similar rolls as a wrap because it provides a delicate yet firm structure that complements the flavors of the fillings without overpowering them. This makes it an excellent choice for a dish that prioritizes the taste and texture of the ingredients inside, such as crispy prawns.

In contrast, flour tortillas are typically used in styles of cuisine that differ from Japanese-inspired rolls, such as Mexican dishes. Unagi sauce and sriracha mayo are condiments that enhance the flavors of the dish but do not serve as the wrap itself. Therefore, soy paper stands out as the correct answer, as it is specifically designed for wrapping ingredients in a way that is both visually appealing and palatable.