Preheat waffle maker. Sift and combine flour, salt, baking powder, brown sugar, cinnamon, nutmeg, and allspice
In separate bowl, melt butter.
Whisk eggs into melted butter. Add milk, vanilla, lemon zest, and lemon juice to bowl. Stir till combined.
Add wet ingredients to dry ingredients. Mix until just combined.
Fold in blueberries.
Spray waffle iron nonstick spray, Cook waffles in waffle maker per your waffle makers’ instructions. (2-3 minutes normally)
PRO TIP: hold waffles in oven at 200 F to keep warm while making the rest of them to keep them warm and not soggy.