Peel the asparagus thinly, wash it, cut off the woody ends and cut the asparagus into pieces about 4 cm long. Cook the asparagus in boiling salted water with sugar for 15 minutes and drain.
Whisk eggs, sake and flour and season with salt and pepper. Heat the frying fat in a pan or deep fryer. Dip asparagus in portions into the batter and deep-fry in the fat until golden brown.
Keep the finished asparagus warm. For the sauce, mix honey, soy sauce and ketchup. Arrange the asparagus in a bowl and garnish with parsley. Add the sauce.