Beef fillet, kombu and shiitake mushroom broth

1. 1

   To make the broth, heat 400ml/14fl oz of water and add the kombu and mushrooms. Leave overnight. Strain the liquid into a clean bowl through a sieve lined with muslin and discard the kombu and mushrooms.

2. 2

   To make the butter, mix all the butter ingredients together in a bowl, roll into a tube shape, wrap in cling film and place in the fridge.

3. 3

   To continue the broth, pour the liquid into a clean pan, bring to a simmer and add the garlic, ginger, soy sauce, mirin, caster sugar and 600ml/20fl oz of water. Add salt to taste. Keep warm.

4. 4

   To make the beef, heat a frying pan until very hot. Add a dash of oil and sear the beef until coloured all over. The beef should still be very rare inside.

5. 5

   Rest the beef in a warm place, topped with a couple of slices of the butter. The remainder of the butter can be saved in the fridge and used in another recipe.

6. 6

   Add the mushrooms and seaweed garnish to the hot broth. Cut the beef fillet into long diagonal slices and transfer to two bowls. Top with the broth and garnish with the watercress. Serve.

1 serving ≈ 525 g

Nutrition values are estimates. - means data is unavailable.