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1
Pat all vegetables, mitsuba and sakura ebi completely dry with kitchen paper. Surface moisture is the principal cause of cluster dispersal: ingredients must be bone-dry before any batter contact. The surface is dry to the touch and no dampness transfers to the paper.
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2
Heat the frying oil in a deep, heavy pot to 170–175°C. This is lower than standard tempura to allow the cluster interior to cook through before the exterior over-colours. Verify with a thermometer or by dropping a thread of batter: it should sink briefly, then rise and sizzle steadily rather than violently.
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3
Make the kakiage batter: combine the beaten egg yolk and ice-cold water, then add the sifted flour in a single addition. Stir no more than four or five strokes — the batter must remain lumpy and visibly coarser than standard tempura batter. Undermixing is correct. The batter is thicker and drier than a standard tempura coating; it falls from a chopstick in clumps rather than a smooth stream.
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4
Toss the dried vegetables and sakura ebi into the batter. Turn them minimally — three or four folds at most — so the ingredients are loosely coated but not submerged. The mix should look rough and clumped, not uniformly coated. This is where the dish lives or dies: if the batter is over-wet or the toss over-worked, the cluster will disperse in the oil into individual pieces rather than hold as a unified kakiage.
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5
Using a large flat ladle or two large spoons, gather roughly one-quarter of the mixture into a loose mound approximately 10–12 cm across. Lower it gently onto the surface of the oil. Do not drop or slide — set the ladle just at the oil surface and allow the oil contact to begin setting the perimeter. The edges begin to sizzle and turn opaque within seconds.
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6
Leave the kakiage undisturbed for 60–90 seconds. The outer crust must set before any repositioning. Premature manipulation collapses the cluster. After 90 seconds, the visible upper surface has begun to turn pale gold and the edges hold their shape; the kakiage may now be gently turned once. Fry until the surface is an uneven, rough-textured gold — some areas crackling thin, others more substantial — and the oil surrounding it sounds steady rather than violent. Total frying time is approximately 3–4 minutes.
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7
Remove the kakiage with a flat skimmer and drain briefly on a rack, never on paper that traps steam beneath. The surface is visibly irregular and dry to the eye, crackling audibly as it rests. Fry remaining portions, one at a time, without crowding the pot.
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8
For the dashi tsuyu: combine dashi, mirin and soy sauce in a ratio of 3:1:1 in a small saucepan and bring briefly to a simmer. The sauce is ready when the sharpness of raw soy has softened and the aroma is clean and rounded — taste for balance between saline and sweet.
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9
To serve as kakiage-don: place hot rice in each bowl and set one kakiage intact on top — it must not be cut. Pour the hot dashi tsuyu over and around the kakiage. Lay mitsuba stems across the surface as a natural garnish. The kakiage begins absorbing the sauce at the base while the upper surface remains crisp: the bowl is served and eaten immediately, before the contrast between tender-base and crackling-surface is lost.