Instructions

Line a baking tray approx. 14" x 10" with baking parchment. Put all the ingredients except the miso into a large, heavy-based pan. Heat gently and stir until all the sugar has dissolved. Boil, stirring constantly, until the temperature on a sugar thermometer reaches 115C/240F.

Turn off the heat and leave until the temperature is down to 75C/170F, then add the miso paste and stir. Beat the mixture until it thickens and the sugar crystals are broken up.

Tip the mixture on to the baking tray and spread out. Leave at room temperature to set and then cut into squares.