Taiyaki — The Shape as Identity

Ingredients

• For the batter
• 150 g plain flour, sifted
• 1 tsp baking powder
• 30 g caster sugar
• 1 egg, lightly beaten
• 180 ml water or milk
• For the filling
• 200 g tsubu-an (coarse sweet red-bean paste), compact and not wet — excess moisture will cause migration through the batter
• For the mould
• 1 tbsp neutral oil, applied before every use

Method

1. 1
   Place the cast-iron taiyaki mould over direct heat. Allow it to come fully to temperature — both halves must be thoroughly preheated before any batter is introduced. Test by holding a hand several centimetres above the surface: the radiant heat should be immediately perceptible. Cold iron will yield a pale, soft exterior without the characteristic crispness.
2. 2
   Combine the sifted flour, baking powder, and sugar in a bowl. Add the beaten egg and water or milk, and mix to a smooth batter with no dry pockets. The batter should fall from a spoon in a steady, ribboning stream — neither thick enough to mound nor thin enough to run freely.
3. 3
   Oil both halves of the mould thoroughly before each use, paying particular attention to the fin edges and the tail, where cast iron makes direct contact without batter coverage. Any dry patch will cause sticking and tearing.
4. 4
   Ladle batter into both halves of the mould — the bottom half first, then the top. Both halves must carry batter; filling the bottom half alone and placing filling without a covering layer of batter leaves the fish's back hollow rather than producing the correct filled interior. Spoon the tsubu-an over the batter in the bottom half, centring it so it will extend from just behind the head to the base of the tail. Close the mould.
5. 5
   Place the closed mould over direct heat with the tail end facing the heat source first. This ensures the thinnest part of the mould — the tail — does not undercook while the body remains raw. Turn the mould every 1–2 minutes over a total cooking time of 4–6 minutes.
6. 6
   Open the mould. The exterior should be evenly mid-golden, with slightly darker areas at the fin edges where the mould carries finer detail and less batter. The eye of the fish should be golden, not dark. Break one taiyaki in half to verify: the an should extend from just behind the head to the base of the tail with no voids and no concentration at the centre.
7. 7
   Serve within 5 minutes of production. A freshly made taiyaki yields a slight, brief surface crunch before giving to a soft interior. This crunch disappears within 10–15 minutes as steam from the interior softens the exterior.