BBC Radio 4 - Woman's Hour, Heston Blumenthal, Diana Athill, Genetic Cancer Links - Pumpkin Soup

Name: BBC Radio 4 - Woman's Hour, Heston Blumenthal, Diana Athill, Genetic Cancer Links - Pumpkin Soup
Ingredients: 850g Pumpkin flesh; Olive oil; 250g Unsalted butter; 3 Onions, peeled and finely sliced; 400g Whole milk; 4 sprigs of rosemary; Pinch of cayenne pepper; 40g Sesame oil (or to taste); 40g Balsamic vinegar (or to taste); Salt; To finish and serve; 20g Hazelnuts, toasted until golden brown; ½ sprig of rosemary; 20g coarse dry breadcrumbs; 1 tbsp melted brown butter (see tip below); 1 Red pepper, de-seeded, roasted and peeled, then cut into diamonds; Red pepper oil (see tip below); Red Pepper Oil; 1 Red pepper, de-seeded, roasted and peeled; 100g Groundnut or grapeseed oil