Cut The Peppers into strips 1/3-in wide, and drain in a colander. Combine the garlic, shallots, pepper, thyme, mustard, anchovy paste and vinegar in a mixing bowl and stir well to blend. Slowly whisk in the olive oil in a slow stream, beating until emulsified. Stir in the peppers, and refrigerate for at least 2 hours. Remove from the refrigerator 1 hour before serving.