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Japanese · Japan

Japanese Kashiwa Mochi and Seasonal Leaf-Wrapped Wagashi

Kashiwa mochi (柏餅) is the wagashi of Kodomo no Hi (Children's Day, May 5), made from mochi rice cake wrapped in a kashiwa (Japanese oak, Quercus dentata) leaf. The oak leaf does not fall until new leaves appear in spring, symbolising the continuity of the family line — a leaf that does not drop until its replacement arrives is a metaphor for unbroken succession. The mochi itself is made from jōshinko (non-glutinous rice flour) or a blend with glutinous rice flour, steamed, then moulded around a filling — typically koshi-an (smooth red bean paste), tsubu-an (chunky red bean), or shiroshiro-an (white bean paste with miso). The kashiwa leaf is traditionally not eaten — it imparts its subtle green, tannic aroma to the mochi through contact. Fresh leaves must be sourced in late April to early May and should be wilted briefly to become supple enough to fold without tearing. In modern wagashi-ya, preserved salt-packed kashiwa leaves are used year-round, though this lacks the aromatic intensity of fresh leaves.

‹Swipe for the next dish›
ServesAbout 12 kashiwa mochi
Sourced1of 7 in BC
Cook
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I

The Market List

The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.

150 g
jōshinko (non-glutinous rice flour)
Not yet stocked in British Columbia
50 g
shiratamako (glutinous rice flour)
Not yet stocked in British Columbia
180 ml
water
warm
Your own market
40 g
caster sugar
Your own market
For the filling (choose one)
300 g
koshi-an (smooth red bean paste)
or tsubu-an (chunky red bean paste), or shiro-an folded with white miso
Not yet stocked in British Columbia
20 g
white miso
folded into shiro-an only, if using that filling variant
Purely Artisan Foods · San Diego →
For the leaves
12
kashiwa (Japanese oak, Quercus dentata) leaves
fresh in late April–May, or salt-packed leaves soaked 30 minutes in cold water, patted dry
Not yet stocked in British Columbia

Each tap is counted, so the stockist sees the demand Provenance sends them.

II

The Method

1
If using salt-packed kashiwa leaves, soak them in cold water for 30 minutes, pat dry, then warm briefly in steam or hot water until fully supple. If using fresh leaves, wilt briefly in steam or hot water. The leaf must bend without resistance and show no tendency to crack at the spine.
2
Divide the chosen filling into 12 equal portions of approximately 25 g each. Roll each portion into a compact oval. Set aside.
3
Combine the jōshinko and shiratamako in a bowl. Dissolve the sugar in the warm water and add to the flours, mixing to a smooth, cohesive dough. The dough should be soft but not sticky, holding its shape when pressed.
4
Transfer the dough to a heatproof bowl or tray, cover with damp cloth, and steam over vigorously boiling water for 20–25 minutes. This is where the dish lives or dies: the dough must be steamed until fully translucent throughout with no white, raw core visible at the centre — under-steamed mochi has a chalky texture and will not fold cleanly around the filling; over-worked dough after steaming becomes excessively sticky and clings to the leaf, destroying presentation on unwrapping.
5
Turn the steamed dough onto a lightly dampened surface. Knead briefly while still warm until smooth and uniform. Divide into 12 equal portions of approximately 30 g each. Flatten each portion into a round disc in the palm.
6
Place one filling oval at the centre of a mochi disc. Draw the edges of the mochi up and around the filling, pinching to seal completely. Shape into a smooth oval. The filling should be fully enclosed with no gaps at the seam.
7
Place each filled mochi oval onto the underside (dull face) of a prepared kashiwa leaf, positioning it at the centre. Fold the leaf lengthwise over the mochi, overlapping the edges at the spine to seal the aroma in. Press the fold gently so the leaf holds. Present with the fold facing the guest. The mochi should hold its oval shape and the leaf should show no tears.
8
Serve within hours of making. The kashiwa leaf's aromatic transfer to the mochi is active while the leaf is fresh and supple; the subtle green, tannic note should be perceptible when the leaf is opened. Day-old leaves lose aromatic relevance.
III

Quality Hierarchy

01
Reserve — Fresh kashiwa leaves sourced in late April to early May; jōshinko stone-milled from single-variety short-grain rice; tsubu-an or koshi-an made in-house from premium Hokkaido azuki; miso shiro-an variant made with aged white miso.
02
Estate — Fresh kashiwa leaves from a specialist Japanese grocer or garden source; quality commercial jōshinko and shiratamako in correct proportion; good-quality shop-bought koshi-an or tsubu-an from a Japanese wagashi supplier.
03
Market — Salt-packed kashiwa leaves, correctly soaked and warmed to recover pliability; standard jōshinko and shiratamako from a Japanese supermarket; commercial an paste of reasonable quality.
04
House — Salt-packed kashiwa leaves with partial pliability; standard rice flour blend; any available smooth or chunky bean paste. Acceptable for the domestic kitchen, though aromatic intensity and textural precision will be reduced.
IV

Sensory Tests

◇Sight. Steamed mochi dough is fully translucent with no white, raw core visible at the centre.
◇Touch. Kashiwa leaf bends at the spine without cracking or tearing, fully supple after wilting.
◇Touch. Shaped mochi holds its oval form without slumping and does not adhere to lightly dampened hands.
◇Smell. A subtle green, tannic aroma is perceptible when the folded leaf is opened at the moment of serving.
◇Where it lives or dies. The mochi must be steamed until fully translucent with no raw white core, and worked only briefly — under-steaming yields a chalky texture that will not fold cleanly, and overworking the hot dough produces excessive stickiness that ruins the presentation when the leaf is unwrapped.
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VI

What to Pour

The pairing
Aramasa No. 6 X-type Junmai Ginjo
Aramasa Shuzo · Yamagata
Not yet stocked in British Columbia
Sake
From British Columbia

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Without alcohol

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The whole pairing
Pillar VII
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Where the dish comes from and how it came to be — on every recipe.
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Sourced through Provenance

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