In a bowl, combine the ghee, parsley, garlic, shallot, Dijon mustard, prosciutto, and lemon juice, and season with salt and pepper to taste.
¼ cup ghee, 1 tbsp. chopped flat-leaf parsley, 2 garlic cloves, 1 shallot, 1 tsp. Dijon mustard, 3 tbsp. prosciutto, 2 tbsp. freshly squeezed lemon juice, Sea salt and freshly ground black pepper