Ingredients
50g unsalted butter
4 small leeks, trimmed and finely sliced
2 cloves garlic, finely sliced
1 medium potato (around 150g), peeled and chopped
500ml hot vegetable stock
2 Dolce Verde lettuce hearts, trimmed and sliced
4 sprigs tarragon, leaves finely chopped
½ lemon
4 tbsp single cream, to serve