Beyond the canonical pork-based Sichuan mapo tofu (see main entry), there exist numerous important regional and dietary adaptations that reveal the dish's flexibility. The Buddhist vegetarian version (su mapo doufu) replaces pork with shiitake mushrooms and adds additional douchi for umami. The Cantonese version softens the ma la intensity considerably and may add oysters or crab. The Japanese mabo doufu (麻婆豆腐) adaptation — brought to Japan by chef Chen Kenmin — uses a less spicy sauce with more mirin and less doubanjiang, producing a sweeter, milder version that has become one of the most popular dishes in Japanese Chinese cooking. Understanding these variations illuminates how a Sichuan core dish adapts to the local flavour preferences of each culture.
Vegetarian mapo (su ma po): Replace minced pork with: finely diced fresh shiitake mushrooms (or reconstituted dried shiitake), walnuts (toasted and roughly crumbled), or finely diced tempeh. Double the douchi quantity to compensate for the umami loss from removing the pork. Use vegetable stock instead of chicken stock. The vegetarian version often benefits from a small amount of mushroom soy or dark soy for depth. Japanese mabo doufu adaptations: Less doubanjiang (often uses the milder Korean-style gochujang or a Japanese tobanjian). Addition of mirin (sweet rice wine) — not used in the Chinese original. The sauce is typically thicker and sweeter than the Sichuan original. The Sichuan peppercorn (the ma component) is often reduced or omitted.
Fuchsia Dunlop, The Food of Sichuan (2019); Fuchsia Dunlop, Every Grain of Rice (2012)