Wash the daikon, peel and grate it. Then squeeze out ⅔ of the water.
Add finely chopped coriander, egg, flour and all the seasonings.
Fold the batter until just mixed through and let it rest.
Thoroughly wash a pineapple and hollow out half of one side. Chop the flesh removed from this half into chunks.
Scoop out the batter with a teaspoon and deep-fry on medium heat until evenly golden brown.
Remove the excess oil from the wok and stir-fry the pepper and pineapple on high heat for 3-4 minutes
Make the sweet and sour sauce by cooking the ketchup, sugar, water and cornstarch together.
Toss the meatballs and vegetables briefly in the sauce.
Dish out the meatballs into the pineapple bowl, garnish and serve.