Grate the daikon and lightly squeeze out excess water. Remove the seeds from 2 plums and mash them. Mix half of the mashed plum with the grated daikon in a bowl to make plum grated daikon.

Pat the buri fillets dry with paper towels, sprinkle with salt, and coat lightly with all-purpose flour.

Heat salad oil in a frying pan over medium heat. Add the buri fillets and cook until browned. Flip them, cover with a lid, and steam for about 3 minutes. Add the plum sauce ingredients and simmer until glossy.