30g/1oz carrot, cut in half lengthways, then cut into 0.5cm/¼in slices
30g/1oz celery, cut into 0.5cm/¼in slices
50g/2oz chanterelle mushrooms, trimmed, cleaned
30g/1oz courgettes, cut in half lengthways, then cut into 0.5cm/¼in slices
½ garlic clove, puréed
30g/1oz leeks, cut into 0.5cm/¼in rings
50g/2oz girolle mushrooms, trimmed, cleaned
50g/2oz button mushrooms, quartered, cleaned
30g/1oz trompette mushrooms, trimmed, halved, cleaned
1 handful flatleaf parsley, coarsely chopped
1 tsp finely chopped shallots
1 sprig fresh tarragon
salt and freshly ground black pepper
40g/1½oz tomatoes, seeds removed, finely chopped
20g/¾oz unsalted butter
2 x 200g/7oz chicken breasts, skin removed