Maple Pecan Cake With Maple Frosting - Maple from Canada

Ingredients

• 1 cup whole-fat buttermilk
• 3/4 cup cooking oil
• 4 large eggs
• 1 tsp vanilla extract
• 1 1/4 cups pure maple syrup from Canada
• 3 cups all-purpose flour
• 2 tsp baking powder
• 2 tsp baking soda
• 1/4 tsp salt
• 1 1/2 cups finely diced pecans
• 1 cup pure maple syrup from Canada
• 5 large egg yolks
• 2 cups unsalted butter, softened
• 1 1/2 cups finely diced pecans, for cake garnish
• 1/3 cup pure maple syrup from Canada, for cake assembly