Higashi (干菓子 — literally "dry confection") are the low-moisture wagashi served at tea ceremonies for the temae (full tea procedure) — not the main confection eaten before the thick matcha (that is the namagashi, the moist confection) but the sweets offered with thin matcha (usucha). They must be completely shelf-stable, completely dry, and completely dissolve on the tongue within seconds of placement. They are among the most technically demanding preparations in wagashi because their stability requires precise sugar crystallisation, and their dissolution requires that the same crystals be of a specific, controlled size.
The primary technique for higashi is the rakugan (落雁 — "falling wild goose") method: a mixture of fine rice flour (joshinko or domyojiko) and fine sugar (traditionally wasanbon) is moistened with the minimum possible liquid (usually a small amount of water or coloured flower water — the moisture is measured in grams, not millilitres), passed through a fine sieve to produce a uniform powder, then pressed into carved wooden moulds (katanuki) with specific force to produce a cohesive form that will hold its shape when unmoulded but dissolve completely on the tongue.
1. Wasanbon is not optional for highest-quality higashi — its fine crystal structure is why the confection dissolves on the tongue. Western refined sugar produces a rakugan with a grainier dissolution. 2. Moisture content is the critical variable — too much and the rakugan blooms (develops surface crystallisation) during drying; too little and the form crumbles when unmoulded. 3. The mould must be dusted with starch (katakuriko) before pressing — the confection must release cleanly to preserve the mould's carved design 4. Resting after pressing, before unmoulding: 24 hours at room temperature allows the form to fully set. Unmoulding too early produces crumbling at the detail edges. Sensory tests: - **The dissolution test:** Place a piece of correctly made rakugan on the tongue without biting. Within 20–30 seconds, it should have dissolved completely with no residue. If it requires active dissolution (pressing against the palate), the crystal structure is too coarse or the moisture content too high. - **The design clarity:** The carved design from the wooden mould should be sharp-edged and fully preserved after unmoulding. Any blurring of design detail indicates too much moisture in the mix. - **The surface:** A correctly dried higashi should have a slightly matte surface that catches light evenly — no shiny spots (too much moisture), no powdery areas (too little binding).
Japanese Confectionery Deep: Wagashi, An, Mochi & the Seasonal Sweet Tradition