I am looking for a Chinese recipe of Pixian dou ban jiang (chili bean paste).
I've made a similar type, a Japanese version, using koji rice, chilli, salt and broad beans but I believe the authentic recipe from Pixian does not include koji rice but uses wild yeasts, red chilli, sugar, flour, salt and broad beans and end product is supposed to be sweet and sour. They are stirred everyday for I don't know how long... (it's a cruecial point I think). Also another difference between Japanese and Chinese version is that the broad beans in Chinese version is left raw (I think, I could be wrong). It takes about one to eight years to make.
I want to try it myself but I can't find the recipe in English. Can anyone help?