Japanese Kenchinjiru Buddhist Vegetable Soup Tradition

Ingredients

• For the vegan dashi
• 15 g konbu (dried kelp), wiped clean with a damp cloth
• 4 dried shiitake mushrooms, whole
• 1 litre cold water
• For the soup
• 2 tbsp sesame oil
• 1 medium stalk gobo (burdock root), scrubbed, cut rangiri (irregular oblique cuts), held in cold water
• 100 g lotus root (renkon), peeled, cut rangiri, held in cold water
• 150 g daikon, peeled, cut rangiri
• 1 medium carrot, peeled, cut rangiri
• 150 g satoimo (taro root), peeled, cut into bite-sized pieces
• 100 g konnyaku (konjac), torn by hand into rough pieces, not cut
• 300 g firm tofu (momen dofu), drained, crumbled by hand into coarse irregular pieces (iri-dofu style)
• 2 tbsp sake
• Seasoning
• 3 tbsp shoyu (soy sauce), or to taste
• 1 tsp salt, or to taste

Method

1. 1
   Combine the konbu, dried shiitake, and cold water in a pot. Allow to steep for a minimum of 30 minutes — overnight if time permits. Place over low heat and bring slowly toward a simmer. Remove the konbu just before the water reaches a boil; continue to simmer the shiitake a further 10 minutes. Remove the shiitake, slice the caps thinly and reserve for the soup; discard the stems. The finished dashi is pale amber, faintly saline, with a clean deep umami — it must carry no trace of fishiness.
2. 2
   Drain the gobo and lotus root. Heat the sesame oil in a heavy pot or donabe over medium heat. Add the gobo and lotus root first — the harder, denser roots — and stir-fry, turning frequently, until the cut surfaces begin to colour and the kitchen fills with the nutty fragrance of toasted sesame meeting earthy burdock. This step is where the dish lives or dies: the sautéing in sesame oil is the defining technique of kenchinjiru, building a sweetness and fragrance that no amount of simmering in plain dashi can replicate.
3. 3
   Add the carrot, daikon, and taro to the pot. Continue to stir-fry until all cut surfaces are lightly glossed with oil and have begun to soften at their edges. Add the konnyaku pieces — torn by hand for maximum surface texture — and stir to coat. Pour in the sake and allow it to sizzle and reduce for 30 seconds, its vapour lifting the aromatic compounds from the vegetables.
4. 4
   Pour the prepared dashi into the pot along with the reserved sliced shiitake caps. Bring to a gentle simmer over medium heat, skimming any foam that rises. Reduce to a low simmer and cook until every vegetable yields without resistance to a skewer — the taro should be fully tender and the daikon translucent.
5. 5
   Crumble the drained tofu directly into the simmering soup by hand, producing irregular pieces in the iri-dofu tradition. Stir gently to distribute without breaking the pieces further. Simmer for 3 to 4 minutes until the tofu has absorbed the broth's colour and warmth at its surface.
6. 6
   Season with shoyu and salt, adding each incrementally. The finished broth must be clear — not opaque — with a clean, assertive shoyu note underpinning the konbu-shiitake umami. Taste: the soup should be warming and round, with no single element dominant. Adjust salt last. Serve immediately, or allow to rest and reheat the following day, when the flavours will have integrated fully.