Chestnut Yōkan (栗羊羹, Kuri Yōkan)

Ingredients

Equipment Needed

• •Nagashikan yōkan mold, or a small loaf pan lined with plastic wrap
• •Small heavy saucepan
• •Wooden spatula
• •Warm damp knife for slicing

Instructions

1. 1

   Prepare the mold

   Line a small loaf pan, about 18 by 8 cm, with plastic wrap, or dampen a proper nagashikan mold if you have one. The damp surface helps the set yōkan release cleanly, and a clean release matters because the cut face is the dish's beauty.

2. 2

   Drain the chestnuts

   Drain the kuri no kanroni and pat the chestnuts dry. Keep them whole. Whole chestnuts are the point here, because each slice should reveal the kuri laid open in cross-section, not little fragments wandering through the bean paste.

3. 3

   Dissolve the kanten

   Put the water and kanten powder in a saucepan and whisk before heating. Bring it to a steady boil, then simmer for 2 minutes, stirring often. Kanten needs a full boil to dissolve properly. If you only warm it, the yōkan may set weakly or weep later, which is a sad thing after behaving so well up to now.

4. 4

   Add sugar

   Add the sugar, chestnut syrup if using, and salt. Stir until the sugar is fully dissolved and the liquid looks clear again. Sugar tightens the texture and rounds the bean flavor, while the pinch of salt keeps the sweetness from turning flat.

5. 5

   Fold in anko

   Lower the heat and add the koshian in several spoonfuls, stirring until the mixture is smooth and glossy. Don't boil it hard now. You want the kanten evenly carried through the bean paste, not scorched anko on the bottom of the pan.

6. 6

   Cook to body

   Cook over low heat for 5 to 7 minutes, stirring with a wooden spatula until the mixture thickens slightly and falls from the spatula in a heavy ribbon. This short cooking drives off enough water to give the yōkan its firm, sliceable body.

7. 7

   Layer the chestnuts

   Pour a thin layer of the hot anko mixture into the mold and let it sit for 1 minute, just until it begins to dull at the edges. Lay the chestnuts in a single line or two staggered rows, then cover with the remaining mixture. That first layer anchors the chestnuts so they don't all sink or float.

8. 8

   Set and chill

   Tap the mold lightly to settle the corners, then smooth the top. Let it cool at room temperature until firm, about 1 hour, then refrigerate for at least 3 hours. Kanten sets as it cools and becomes cleanly sliceable once chilled.

9. 9

   Slice cleanly

   Unmold the yōkan and slice it with a warm, damp knife, wiping between cuts. The warm blade passes through the firm jelly without dragging the bean paste, and every slice should show a quiet brown face with pale chestnut moons inside.

Chef Tips

• •Use koshian if you want the classic smooth face. Tsubuan, coarse bean paste, tastes good but gives a rougher cut, and that changes the character of this particular sweet.
• •Kanten is not gelatin. It sets firmer, melts less readily, and gives yōkan its clean bite. Agar powder sold for cooking is the closest stand-in, but check the strength and use the package amount for 300ml liquid.
• •Slice with a warm, damp knife and wipe after every cut. The cut face is where the chestnut shows itself, so let the knife do its work cleanly.
• •Serve small pieces. Yōkan is dense by design, and restraint makes it more generous, not less.

Advance Preparation

• •Kuri yōkan is best made at least half a day ahead so the texture firms completely and the sweetness settles.
• •Wrapped tightly, it keeps 5 days refrigerated. Let it stand at room temperature for 20 minutes before slicing so the flavor opens.
• •Drain and dry the chestnuts before starting. Wet chestnuts make pockets around themselves and blur the clean slice.

Frequently Asked Questions

Nutrition Information

1 serving (about 105g)