Kinzanji miso is not for soup. It is a chunky, sweet-savoury 'name-miso', a miso you eat straight, spooned onto hot rice, tucked into a cucumber stick or set beside rice porridge at breakfast. Legend says a monk brought the method from Jingshan Temple in China to Yuasa in Wakayama, where the run-off liquid became Japan's first soy sauce. Traditionally it is made in summer, when aubergines and uri melons are plentiful, and eaten through autumn and winter. You can see every ingredient: soft barley grains, nutty roasted soybean pieces, little cubes of aubergine and cucumber, threads of ginger, all bound in a glossy brown paste. This home version uses ready-made barley koji. The common mistake is adding the vegetables wet; salt them, then squeeze hard, or the extra water thins the salt and invites spoilage. It is ready when the barley grains are soft, the mix smells sweet and soy-like, and it tastes rich and rounded, after about four weeks; then it is sweetened and kept cold. Japanese melon (shirouri) is traditional; firm cucumber is the usual substitute. Chef's tip: a spoonful on a cold block of tofu with a little chopped spring onion is the best snack you can make in 30 seconds.