P
Japanese · Japan
Japanese Yōkan Yokan Wagashi Confectionery Structure Types and Tsubu-an vs Koshi-an
Yōkan (羊羹) is Japan's most refined wagashi confectionery and one of the oldest: a firm, sliceable sweet made from anko (azuki bean paste), sugar, and agar (kanten), presented as a dense rectangular block in traditional lacquered boxes. The name 'yōkan' originally referred to a mutton-based gelatine dish brought from China in the 13th century; Buddhist restrictions transformed it into a sweet bean confection. Three primary types define the category: neri yōkan (練り羊羹 — 'kneaded yōkan') is the densest, most firm version with high bean content and low water; mizu yōkan (水羊羹 — 'water yōkan') is softer, higher-moisture, almost pudding-like in texture and typically served cold in summer; hoshin yōkan is an intermediate. The anko interior is defined by two preparation methods: tsubu-an (粒あん — 'whole grain an') which retains the azuki bean skins for texture and visual effect; koshi-an (こしあん — 'strained an') which is completely smooth, sieved of all skins for silk-fine texture. Premium yōkan producers (Toraya, Minamoto Kichoan, Imamiya) maintain multi-generation recipes and seasonal varieties. Matcha yōkan, chestnut yōkan, and citrus yōkan represent the variety spectrum.
I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
For the anko (azuki bean paste)
300 g
azuki beans
Hokkaido Tokachi region, erimo-shōzu variety preferred
Not yet stocked in British Columbia
250 g
white sugar
added only after beans are fully cooked; do not reduce — sugar concentration is the natural preservative
Your own market
For the kanten set
500 ml
water
Your own market
For the kanten set — neri yōkan
2–3 g
kanten (agar powder)
not gelatin; kanten holds its structure at 30 °C and is the only agent specified for yōkan
Not yet stocked in British Columbia
For the kanten set — mizu yōkan (alternate)
1–1.5 g
kanten (agar powder)
reduced ratio for softer, higher-moisture summer set; serve ice cold
Not yet stocked in British Columbia
For the mould
1 tsp
neutral oil or water
to lightly dress the rectangular mould before pouring
Your own market
II
The Method
1
Rinse the azuki beans thoroughly and cover generously with cold water. Bring to the boil, drain, and discard the first water. Cover with fresh cold water and simmer over low heat until the beans are completely soft throughout — 60 to 90 minutes. Press a bean between two fingers; there must be no chalky, raw resistance at the centre. Under-cooked beans produce a grainy, indigestible paste.
2
For koshi-an: pass the cooked beans through a fine sieve or tamis, discarding all skins, until the paste is completely smooth. For tsubu-an: mash the beans partially, retaining the skins for visual and textural complexity — the choice is made on the formality of the occasion and the intended aesthetic. Place the chosen paste in a wide, heavy pan over low-medium heat.
3
Add the sugar to the bean paste in the pan. Stir continuously over medium heat, folding the paste away from the base and sides. Cook until the paste pulls cleanly from the sides and base of the pan and holds its shape when a spoon is drawn through it. Do not reduce the sugar quantity — the concentration is both flavour and preservative. The paste should be dense, glossy, and deep red-brown in colour.
4
Dissolve the kanten in the 500 ml of water in a separate saucepan, bring to the boil, and stir until completely dissolved — agar will not dissolve below boiling point. For neri yōkan use 2–3 g; for mizu yōkan use 1–1.5 g. The kanten ratio determines the density of the finished block entirely. Stir the anko paste into the dissolved kanten liquid over low heat, combining until uniform.
5
This is the step on which the dish lives or dies. Remove the pan from the heat and allow the mixture to cool to 80 °C before pouring into the prepared mould. Kanten sets at 40 °C; pouring at exactly 80 °C is the operational margin — too cool produces texture irregularities and a stratified set; too hot accelerates skin formation on the exposed surface. Use a probe thermometer. Pour smoothly in a single continuous motion, tap the mould once to settle the surface, and do not disturb it again.
6
Refrigerate the filled mould for a minimum of two hours until the block is completely firm and cold. Do not cut while warm — hot yōkan produces ragged edges and an inconsistent cross-section. When set, the block should be firm, glossy, and hold a clean right angle when unmoulded. For mizu yōkan, serve directly from the refrigerator, ice cold.
7
Unmould and slice with a single clean downward stroke of a thin blade — no sawing motion. The cut face should be perfectly smooth for koshi-an; for tsubu-an, the bean skins should be visible as distinct flecks. Serve in measured rectangular portions on a lacquered or ceramic plate alongside a bowl of freshly whisked, unsweetened matcha or gyokuro.
From the canon — Matcha (抹茶) — finely stone-ground powdered green tea from shade-grown tencha leaves — extends far beyond the tea ceremony context into Japanese cooking and c… Matcha — Culinary Applications Beyond the Tea Ceremony (抹茶料理) →
III
Quality Hierarchy
01
Reserve — Hokkaido Tokachi erimo-shōzu azuki beans; koshi-an strained to absolute silk; neri yōkan set at the canonical 2–3 g kanten per 500 ml; recipe held to the Toraya benchmark (1526, Kyoto), the oldest surviving yōkan producer and the canonical comparison point for serious evaluation.
02
Estate — Named Japanese wagashi producer (Minamoto Kichoan, Imamiya) dried azuki beans; koshi-an or tsubu-an prepared to order; kanten ratio calibrated by type; served in traditional lacquered box presentation with seasonal variety selection.
03
Market — Good-quality dried azuki beans from a Japanese or Korean grocer; tsubu-an preparation (skin-on) for texture; standard kanten ratio; set in a clean rectangular loaf mould; served cold with quality loose-leaf matcha.
04
House — Any dried azuki beans; tsubu-an for simplicity; packaged kanten bars dissolved per packet instruction; set in any rectangular container lined with cling film for clean unmoulding; sugar not reduced.
IV
Sensory Tests
◇Touch. A cooked azuki bean pressed between two fingers yields with no chalky resistance at the centre — the bean is ready for pasting.
◇Sight. The anko paste pulls cleanly from the base and sides of the pan and holds a defined channel when a spoon is drawn through it — the paste is correctly reduced.
◇Touch. The mixture reads 80 °C on a probe thermometer before pouring — the critical temperature window for a clean, even kanten set.
◇Sight. After refrigeration the unmoulded block holds a clean right angle at every edge, and the cut face is smooth — the set is complete and the slice is correct.
◇Where it lives or dies. The yōkan lives or dies at the pour: the mixture must enter the mould at exactly 80 °C — too cool stratifies the set; too hot skins the surface before the block can form correctly.
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VI
What to Pour
The pairing
The Yamazaki 12 Year Old Single Malt
Suntory Spirits — Yamazaki Distillery · Yamazaki — Suntory Distillery
Not yet stocked in British Columbia
Whisky
From British Columbia
Nothing from British Columbia holds against this yet.
Without alcohol
No pour without alcohol holds against this yet.
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The whole pairingPillar VII
Origin and lineage are part of membership.
Where the dish comes from and how it came to be — on every recipe.
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