Caramelized Garlic and Spinach Quiche with Aged Cheddar – Heritage 1874 Cheese

Ingredients

• 1⅓ cup pastry flour
• 4 oz cold unsalted butter, cut into pieces
• 2 tsp sugar
• 1 egg yolk plus 1 egg for egg wash
• ½ tsp salt
• ½ tsp white vinegar
• 2 tbsp water
• 4 large eggs
• 3 heads of garlic, cloves peeled
• 1 tablespoon olive oil
• 1 tablespoon balsamic vinegar
• 1 tablespoon pure maple syrup
• 1 teaspoon chopped fresh rosemary
• 1 teaspoon chopped fresh thyme
• Kosher salt and black pepper to taste
• 6 ounces sharp white cheddar cheese, grated (about 2 cups)
• 2 cups baby spinach
• ¾ cup crème fraîche
• ¾ cup heavy cream