Preheat a griddle to 350 degrees. Sift together dry ingredients. In a separate bowl, whisk together Eggnog, egg, egg yolk, and melted butter. Add wet ingredients to dry and mix together until well combined. Be careful to not overmix. Pour 1/4 cup mix onto griddle per pancake. Don't do more or it may not cook all the way through. Turn over when light brown on one side and finish cooking the other. Do not flatten while cooking and be patient as they cook. These do cook a little slower than a pancake mix because they are thicker. When they are finished, drizzle with syrup, whipped topping, etc.