Fruit Topping: In a small bowl mix together the blueberries, sugar, zest and juice. Toss to coat and set aside.
For the Waffles: In mixer bowl, combine sugar and butter until light and fluffy. Beat in eggs until blended. Add orange zest and juice.
Whisk together the flour, salt, baking powder and baking soda in a bowl. On low speed add flour mixture to combine. Next add the buttermilk. Mix just until blended, batter will be very thick.
Gently fold in blueberries with spatula.
Scoop 3/4 cup batter onto a greased, hot waffle maker and cook per manufacturer’s instructions. This makes 6 waffles.