Walking into a Japanese bakery, you might be forgiven for thinking you are somewhere in the heart of Paris. Pastries, loaves and rolls are piled high and plentiful, and you are cosseted by the sumptuous aromas of warm dough and hot sugar. But look a little more closely, and you may start to reconsider. The cheese has a slightly odd, plasticky sheen. What you thought were chocolate chips appear, upon closer inspection, to be red beans, the kind you might normally expect to find in your chilli con carne. And, of course, much of the bread is green.