Japanese Sweet Potato Okonomiyaki

Whisk the flour, baking powder and a pinch of salt in a large mixing bowl. Add the eggs, stock and soy sauce and whisk until smooth. Add the cabbage, sweet potato and spring onions and mix to combine.

Heat 1 tablespoon of the oil in a large non-stick frying pan over medium heat. Add 1 cupful of the batter and use a spatula or spoon to shape into a thick round pancake. Cook for 3 minutes or until the underside is golden. Flip the pancake over. Cook for another 3 minutes or until cooked through. Transfer to a plate lined with paper towel. Repeat with the remaining oil and batter in two more batches. Drizzle with the tonkatsu sauce and the mayo and sprinkle with spring onions and furikake.