https://www.keyingredient.com/recipes/2491245035/japanese-hot-cake/
until foamy. This should take about 3 minutes. You are looking for a
consistency that is light, foamy, frothy, and full of bubbles.
In another medium bowl, whisk together flour, baking powder, and sugar.
Use a wooden spoon or spatula to lightly, but quickly fold into the
liquid ingredients until just incorporated. Allow resting until slightly
thickened, about 15 minutes.
Place a large skillet over medium-low heat and lightly grease with
butter or oil. Once heated, pour 1/4 cup of the batter in prepared
skillet. Once golden on bottom and bubbles begin to form on top, flip to
the other side. Continue to cook until golden. Repeat with remaining
batter. Serve immediately topped with maple syrup, butter, whipped cream
or fresh berries.