Ingredients

  • Kombu 5 pieces
  • Soya sauce 2 tbsp
  • Rice vinegar 2 tbsp
  • Mirin 2 tbsp
  • Granulated sugar 1 tbsp
  • Unsalted french butter 125g

Given the cook-at-home nature of Spinneys and natural variations in ingredients, nutritional information is approximated."

Kombu butter

Asian 10 Mins Prep ยท 10 Mins Cook


  1. Rinse the kombu with cool water.
  2. Place in a pot over a high heat. Add the rest of the ingredients (except the butter) and fill with just enough water to cover the kombu. Bring the water to a boil and simmer until the kombu is soft, approx 5-10 minutes. Allow to cool. Strain the liquid.
  3. Transfer the soft kombu to a blender and add 4 tbsp of the reserved liquid. Blitz until it becomes a paste. Refrigerate until chilled.
  4. Work the unsalted butter with a spatula until soft then add 1-2 tbsp of the kombu paste. Serve the butter as a finishing touch to any seafood dish.