2 large eggs
1 3/4 cups (397g) buttermilk or clabbered milk
90g vegetable oil
2 teaspoons Vanilla Extract
2 cups (226g) Pastry Flour or 1 3/4 cups (210g) All-Purpose Flour
2 tablespoons (25g) granulated sugar
2 teaspoons baking powder
1 teaspoon baking soda
1 teaspoon salt
1/2 cup (48g) Almond Flour, optional

In a medium-sized mixing bowl, beat together the eggs yolks, buttermilk, melted butter, and vanilla.

In a separate bowl whisk together the dry ingredients.

Whip egg whites

Combine the wet and dry ingredients, stirring just until nearly smooth; a few small lumps may remain.

https://www.kingarthurbaking.com/recipes/classic-buttermilk-waffles-recipe