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1
Soak the salted jellyfish in several changes of cold water over at least one hour. Taste the jellyfish: it should retain a faint oceanic salinity but carry no harsh salt burn. Drain thoroughly and dress with sesame oil, rice vinegar, and sugar. Set aside at room temperature.
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2
Bring all braised and prepared meat components — red-braised pork ear foremost — fully to room temperature. Slice the pork ear across the grain into thin, even pieces. The surface should show a deep mahogany glaze; the cross-section should reveal alternating layers of skin, cartilage, and fat. If the pieces are still cold at the centre, the fat will be opaque and the flavour closed.
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3
Quarter the century eggs and arrange beside fine-julienned fresh ginger. Drain and portion the soy-dressed tofu. Slice the smoked fish. Cut the pickled cucumber. Blanch the edamame and black fungus, cool under cold water, and dress. Prepare the seasoned tofu skin. Every component must reach the same resting temperature: room temperature or slightly cool. This is where the platter lives or dies — components pulled straight from refrigeration suppress their own flavours, and the textural contrasts that define the leng pan collapse into uniform cold. Test each element with a finger placed flat against its surface: it should feel neutral, neither cold nor warm.
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4
Arrange the components on the platter according to colour principle: red (braised pork ear, smoked fish), white (tofu), green (cucumber, edamame), yellow (tofu skin), black (century egg, black fungus). Portions are small — variety of flavour and texture is the purpose, not volume. The arrangement is sculptural; the platter is read visually before it is eaten. Sight confirms readiness: the five colour registers should each be distinctly present, the slicing clean, and no component overlapping to obscure another.