2 Little Gem lettuce, 1 shredded, 1 cut into quarters lengthways
3 sprigs tarragon
salt and pepper
200ml/7fl oz vegetable stock
1 tsp white wine vinegar
50驳/1戮辞锄 butter
4 eggs
1 small baguette or baton, cut into 12 slices
300g/10陆oz frozen peas