Chestnut mushroom broth
Chestnut mushrooms, just like porcini mushrooms (cep), contain a lot of umami and provide an even richer flavor to your stock, just like the dashi and kombu.
Creation by Martin Benn, Sepia restaurant, Sydney, Australia.
Makes 2500ml.

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Ingredients
1500 |
ml |
water |
1 |
piece |
kombu, 10cm |
1 |
kg |
chestnut mushrooms |
665 |
ml |
chicken stock |
1 |
tbsp |
porcini powder |
165 |
ml |
soya sauce |
65 |
ml |
mirin |
33 |
ml |
shiro dashi (condiment based on dashi) |
60 |
g |
katsuobushi (shaved bonito flakes) |
As needed: |
|
white pepper, ground |
As needed: |
|
salt |
Preparation method
- Pour the water into a five-litre pan and add the kombu.
- Leave to soak for 30 minutes and then heat to 60°C and leave to infuse at this temperature for 30 minutes. Remove the kombu.
- Finely grind the chestnut mushrooms in a food processor and add to the kombu water.
- Add the chicken stock and the porcini powder and leave to infuse for 30 minutes.
- Add the soya sauce, mirin, and shiro dashi and leave to infuse for another five minutes.
- Season the broth to taste with the katsuobushi, salt, and ground white pepper.
- Leave to infuse for another ten minutes with the lid on the pan and then pour through a fine sieve.
- Cool the broth on iced water and set aside in the refrigerator to continue infusing for two days.
Serving suggestions
- In a dish with grilled wagyu steak, a chestnut mushroom and dashi tuile, and roasted onion crumble.
- In a dish with tuna, radishes, and enoki mushrooms.
- Use in a dish with components of game, mushroom, and chicory.