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4
Easy
Published 2011
This refreshing soup can be made with any spring leaves, including thinnings from the salad patch. Depending on your choice of leaves, sharpen the flavour with a little lemon juice.
Pick over the watercress and spinach and remove any tough stalks. Shred roughly.
Melt the butter in a heavy pan, but don’t let it brown. Add the leaves and stir them over the heat for a few minutes till they wilt. Add the potato and stock and bring to the boil. Season, lid loosely and simmer for 20–30 minutes.
Push the mixture through a vegetable mill or give it a quick whizz in