Pasta with Prawn and Pepper Sauce

Pasta

• 1000 g water
• 1 tsp oil
• 1 tsp fine sea salt
• 80 g pasta, long and dry (e.g. spaghetti)

Sauce

• 3 shallots, halved
• 10 g unsalted butter
• 60 g crème fraîche
• 1 tsp grated lemon zest
• 100 g peeled, raw prawns
  or 100 g shrimp, small, peeled
• 1 tsp dried green peppercorns
• 1 tsp lemon juice
• 1 - 2 pinches fine sea salt