Make Yeasted Waffles ahead for airy, crisp breakfast waffles topped with berries and syrup.
Gently warm the milk with the cubed unsalted butter in a microwave-safe bowl (or a pot) just until the butter melts; you want the mixture lukewarm to the touch so it will wake the yeast without killing it. Let the jug/bowl cool on the counter until it is no longer hot, then set it aside in the same vessel to use when combining with the dry ingredients.
In a large modern matte grey ceramic mixing bowl, stir together the all-purpose flour, salt, granulated sugar and instant yeast until evenly mixed. Gradually whisk in the cooled milk-and-butter mixture until a loose, slightly sticky batter forms—scrape the bowl sides with a spatula so everything is fully incorporated and the texture is smooth but still soft.
Cover the mixing bowl tightly and refrigerate the batter overnight (6 to 24 hours). During this cold rest the yeast develops flavor and the batter will become slightly aerated and dotted with tiny bubbles; you should notice a relaxed, pillowy texture and deeper aroma when you uncover it the next day.

When ready to cook, separate the eggs into yolks and whites. Whisk the yolks together with the baking soda and vanilla until smooth, then stir the yolk mixture gently into the chilled, risen batter. The batter will relax further and smell faintly of vanilla and fermented sweetness.
Beat the egg whites to stiff, glossy peaks and fold them carefully into the batter in light, sweeping motions so you retain as much air as possible—the batter should look airy, with visible ribbons from the whipped whites. Spoon the batter into a greased waffle iron and cook until each waffle is golden-brown and crisp on the outside, with an open, airy interior.
Arrange the hot waffles on a light gray rustic plate, cut into quarters and fanned in a circular pattern. Top with sliced strawberries, plump blueberries, a generous drizzle of syrup pooling in the deep waffle pockets, and a dollop of whipped cream. Serve immediately, or keep warm briefly in a low oven if needed, and enjoy the contrast of crisp exterior and tender, aerated crumb.
