Roast Chicken Dinner with Yorkshire Pudding, Roasted Root Vegetables, and Gravy

Ingredients

• 1 whole chicken
• 4 large egg
• 1/2 cup milk
• 1 pound potato
• 1 pound carrot
• 1 pound parsnip
• 1 whole onion
• 4 cloves garlic
• 1 whole lemon
• 1 bunch rosemary
• 1 bunch thyme
• 1 cup all-purpose flour
• 1 cup vegetable oil
• 2 cups chicken broth
• 2 tablespoons cornstarch
• 2 teaspoons salt
• 1 teaspoon black pepper