Spring Vegetable Quiche Gelson's

Ingredients

• 2 cups all-purpose flour
• ½ tsp kosher salt, plus more to taste
• 12 Tbsp unsalted butter, chilled, diced, and divided
• 1 large Gelson’s egg yolk
• ½ cup, plus 1 Tbsp ice cold water
• 1 leek, chopped, soaked, and drained
• 2 garlic cloves, finely chopped
• ¾ cup thinly sliced asparagus, cut on the bias
• 6 sprigs Gelson’s organic thyme, roughly chopped
• Black pepper, to taste
• 10 oz frozen spinach, thawed and drained
• 6 large Gelson’s eggs
• 2 cups heavy cream
• 1 cup whole milk
• 4 oz garlic-and-herbs chèvre, softened
• 4 oz Gruyère cheese, grated