Kuri Kinton Chestnut Sweet Potato Gold New Year Osechi

Ingredients

• 500 g satsuma imo (Japanese sweet potato), peeled, cut into rounds
• 3–4 kuchinashi no mi (gardenia pods), cracked open to release pigment
• 80 g sugar
• 2 tbsp mirin
• For the kuri no kanroni
• 200 g whole chestnuts, peeled
• 150 g sugar
• 250 ml water

Method

1. 1
   Prepare the kuri no kanroni. Combine the peeled chestnuts, sugar, and water in a small saucepan. Bring to a gentle simmer over low heat and cook until the chestnuts are tender throughout and the syrup has thickened to a light amber glaze. Reserve the chestnuts in their syrup; reserve the syrup separately for adjusting the potato paste. The chestnuts are done when a skewer meets no resistance at the centre.
2. 2
   Place the peeled, sliced sweet potato in a saucepan with enough cold water to cover. Add the cracked gardenia pods. Bring to a simmer and cook until the sweet potato is completely soft. The water will take on a deep yellow hue from the pods; this is the color that will carry into the finished dish. The potato is ready when it crushes without resistance under a spoon.
3. 3
   Drain the sweet potato, discard the gardenia pods, and pass the flesh immediately through a fine-mesh sieve or uragoshi (drum sieve). Work the paste while still hot so it moves through the sieve cleanly. The result must be entirely smooth — no fibrous threads remain. This step decides the dish: the silken, uniformly golden paste is both the texture and the visual meaning of kuri kinton; a coarse or grey result cannot be recovered.
4. 4
   Transfer the sieved paste to a clean, heavy saucepan. Set over low heat and fold in the sugar and mirin, stirring constantly. Taste the paste and adjust sweetness with reserved chestnut syrup in small additions — the sweet potato's own sweetness should carry the profile; the paste should be mildly sweet, not cloying. Continue stirring until the paste is glossy, cohesive, and pulls away from the sides of the pan.
5. 5
   Remove the pan from the heat and allow the paste to cool until it is warm rather than hot. Only then fold in the whole kanroni chestnuts with a gentle hand, turning them through the paste so they remain intact. Adding chestnuts while the paste is still very hot will cause them to disintegrate. The finished kuri kinton should show whole amber chestnuts suspended in a bright, uniform gold paste.
6. 6
   Transfer to the osechi compartment or a serving vessel and allow to come fully to room temperature before serving. Refrigeration firms the paste and mutes the flavour; kuri kinton is served at room temperature. The surface should be luminous gold — the colour of coined metal — and the chestnuts distinct and unbroken.