squeeze lemon, plus extra, if needed
100²µ/3Β½΄Η³ϊ watercress sprigs, rinsed and trimmed
watercress sprigs, to serve
1 tsp Dijon mustard
60²µ/2ΒΌ΄Η³ϊ plain flour
sea salt and freshly ground black pepper
100²µ/3Β½΄Η³ϊ panko or dried breadcrumbs
250ml/9fl oz sunflower oil or vegetable oil
vegetable oil, for shallow-frying
25ml/1fl oz white wine vinegar
butter, for spreading
6 free-range eggs
2 free-range egg yolks, at room temperature
1 tbsp milk
8 black pudding slices
4 young grouse breasts, skinned
4 large sourdough bread slices