Preheat oven to 350°F (175°C)
Grease and line two 8-inch (20 cm) round cake pans with parchment paper
Gather ingredients: flour, sugar, baking powder, salt, eggs,...
Gather supplies: jar (quart-size or larger), lid or cover (not airtight), spoon or spatula, kitchen scale (optional but helpful), rubber band/marker, flour (unbleached all-purpose...
