Prepare the ingredients. Get kuruma shrimp or black tiger shrimp, scallops, and squid ready. Store-bought tempura flour is plenty good for the batter, so use that.
Kuruma shrimp (or black tiger shrimp) to tasteScallop adductor muscle to tasteJapanese common squid 1 squidTempura flour (cake flour) to tasteWater to taste