I've been making a similar recipe for pancakes for years, so I was excited to see it for waffles. A few additions I make are 2 tablespoons of wheat germ and a squeeze of flax seed oil to make them a little healthier. I also add about 1/2 tsp of dried lemon peel to help bring out the blueberry flavor. If you don't have fresh buttermilk, powdered buttermilk substitutes nicely and keeps in the refrigerator for a long time. I often add some bacon bits to the batter when I add the blueberries for more variety in each bite. Lots of options!