Luxurious Chicken Pot Pie

Ingredients

• 2 cups (260 grams) all- purpose flour
• 1/2 teaspoon (4 grams) salt
• 12 tablespoons (168 grams) cold unsalted butter, diced
• 6 tablespoons (90 grams) plain full-fat yogurt
• 1 tablespoon (7.5 ml) white wine vinegar, lemon juice, or apple cider vinegar
• 6 tablespoons (42ml) cold water
• 1 egg, beaten (for egg wash)
• 5 chicken thighs
• 1 medium yellow onion, chopped
• 1 garlic clove, smashed
• 1 pound (448 grams) sliced button mushrooms
• 1 stick of celery, chopped
• 3/4 teaspoon salt
• 1/4 teaspoon ground black pepper
• 1/2 cup (120mL) white wine
• 1/2 teaspoon dried thyme leaves
• A sprig of fresh rosemary, finely chopped
• 3 sage leaves, finely chopped
• 1 bay leaf
• 1/4 cup (32 grams) all-purpose flour
• 1/2 cup (120mL) heavy cream
• 1 cup (240mL) chicken broth