Ingredients

• 4 C whole milk, divided
• 4 large egg yolks
• ½ C unsalted butter, 1 stick
• ½ C all purpose flour
• 1¼ tsp salt
• ½ tsp ground black pepper
• ⅛ tsp ground nutmeg
• ⅛ tsp ground allspice
• 1½ C grated Parmesan cheese

Instructions

1. Whisk 1/2 cup milk and egg yolks in small bowl.
2. Melt butter in large saucepan over medium-high heat.
3. Add flour; whisk until smooth and bubbling, about 1 minute.
4. Gradually whisk in 3 1/2 cups milk, salt, pepper, nutmeg, and allspice.
5. Bring sauce to simmer, whisking often.
6. Reduce heat to low; simmer until sauce is thick, whisking often, about 8 minutes.
7. Whisk yolk mixture and Parmesan into sauce.
8. Continue to simmer 2 minutes, whisking constantly.
9. Season to taste with salt and pepper.