250g/9oz floury potatoes, such as maris piper, desir茅e or king edward, cut into large chunks
2 tbsp roughly chopped fresh dill
1 lemon, zest only, finely grated
1 tbsp drained capers, chopped (optional)
1 tsp horseradish sauce
salt and freshly ground black pepper
4 heaped tbsp fresh breadcrumbs
olive oil
2 tbsp cream cheese
200g/7oz smoked salmon