Chocolate waffles

Ingredients

7 ounces all-purpose flour, approximately 1 1/2 cups

1 3/4 ounces sugar, approximately 3 tablespoons

1.5 ounces cocoa powder, approximately 1/2 cup

1 teaspoon baking powder

1 teaspoon salt

1/2 teaspoon baking soda

3 whole eggs, beaten

2 ounces unsalted butter, melted and slightly cooled

1 teaspoon pure vanilla extract

16 ounces buttermilk, room temperature

4 ounces chocolate chips, approximately 3/4 cup