01 - Preheat your waffle iron according to the manufacturer's instructions.
02 - In a large bowl, whisk together the flour, cocoa powder, sugar, baking powder, baking soda, and salt until well combined.
03 - In another bowl, whisk the eggs, buttermilk, melted butter, vanilla extract, and red food coloring until completely blended and smooth.
04 - Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix; a few small lumps are acceptable.
05 - Lightly grease the waffle iron. Pour about 1/2 cup batter into the center and close the lid. Cook until crisp and cooked through, approximately 3–5 minutes. Repeat with remaining batter.
06 - Serve waffles immediately while warm, topped with syrup, whipped cream, and fresh berries if desired.