Vegetarian recipe ideas
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Wash the kombu really well under cold running water and add to a pan with 1 litre of cold water. Heat gently and slowly bring to just below a simmer, this should take 10-15 minutes. Remove from the heat and remove and discard the kombu. Add the katsuobushi flakes and stir well. Leave for 5 minutes and strain through a fine-sieve or muslin, gently squeezing the katsuobushi, then discard.
Dashi will keep for up to 1 week covered in the fridge.