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 a separate bowl, whisk the buttermilk, eggs, melted butter, vanilla extract, and red food coloring until fully incorporated.
04 - Pour the wet ingredients into the dry ingredients and stir gently until just combined. Do not overmix; a few lumps are acceptable.
05 - Lightly grease the preheated waffle iron with nonstick spray or a small amount of melted butter.
06 - Pour approximately 1/2 to 3/4 cup of batter onto the center of the hot waffle iron, adjusting based on your iron's capacity.
07 - Close the lid and cook for 3 to 5 minutes, or according to your waffle iron's instructions, until the waffles are crisp and cooked through.
08 - Continue cooking the remaining batter in batches until all waffles are prepared.
09 - Serve the waffles immediately with a pat of butter and a generous drizzle of warm maple syrup.