Dutch White Asparagus

Ingredients

• 12 spears Dutch white asparagus
• 1/2 each Meyer lemon, orange and grapefruit
• 2 cups water, for steaming
• 1 cup grated Parmesan cheese
• 1/2 cup Chardonnay
• 1/2 cup white wine vinegar
• 2 sprigs fresh thyme
• 1/2 cup shallots, minced
• small chunk of Parmesan rind
• 4 tablespoons unsalted butter, chilled and cut into small cubes
• 4 fresh eggs, poached (see instructions)
• 4 slices prosciutto