COOK IT.
Combine the eggs, mustard, salt and vanilla seeds in a bowl. Using a hand blender, blitz the ingredients together. Slowly add in the oil, a little at a time. When the mayonnaise has emulsified, stir in the vinegar. Cover until needed.
Combine all of the ingredients for the chilli sauce and place in the fridge, covered, overnight. Cut the lobsters in half, lengthwise, clean and place a skewer from the top, halfway through. Season with salt and pepper, then coat with some olive oil. Add some of the chilli sauce on the flesh side. Place them on a hot grill or gas / charcoal Grill for approximately 2 minutes on each side. Once cooked, remove from the grill and place them on a platter. Squeeze some lemon juice on top. Serve with the Vanilla Mayonnaise.