In my lifelong quest for a perfectly light, crisp waffle, I learned early on that I wouldn’t get the desired results with a dump-and-stir recipe. This recipe requires a little extra fuss, but the ethereal texture is totally worth it.
Sift together flour, sugar, baking powder, baking soda, and salt into a large bowl.
In a medium bowl, whisk together buttermilk, egg yolk, vanilla extract, vanilla bean paste or caviar, and oil until smooth. Whisk in club soda. Gently whisk the wet ingredients into the dry ingredients just