Farmhouse Mac and Cheese

Ingredients

• ¾ cup full fat milk
• ¼ cup heavy cream
• ¼ white onion, skin on, roughly chopped
• 1 bay leaf
• 2 cloves
• 2 garlic cloves, crushed
• ⅛ teaspoon cayenne
• ¼ nutmeg, grated
• 2 parley stems
• 1 teaspoon kosher salt
• 8 black peppercorns, whole
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 1 teaspoon dijon mustard
• ½ pound dried macaroni
• 7 teaspoons kosher salt
• 2 tablespoons olive oil
• 1 cup grated parmesan cheese
• 3 cups grated cheddar cheese
• 1 pint béchamel
• coarse sea salt for finishing
• 4 tablespoons all-purpose flour
• ¼ teaspoon onion powder
• ¼ teaspoon garlic powder
• ¼ teaspoon mustard powder
• ¼ teaspoon cayenne powder
• ½ teaspoon ground black pepper
• 2 tablespoons heavy cream
• 2 cups vegetable oil
• kosher salt for seasoning