Salted butter, at room temperature • Packed Dark Brown sugar • Granulated sugar • Rum • Ground coffee • Mascarpone cheese • All-purpose flour • Salt • Baking powder • Dark chocolate, finely chopped • Flaky salt (for topping)
Bread Flour (high protein for chewy texture) • Salt • Liquid Kansui (lye water) (as alkaline agent) • (or ml) Warm Water (to reach Total Liquid Volume to 140 ml)
granulated sugar • lemon zest • King Arthur Unbleached All-Purpose Flour or King Arthur Gluten-Free Measure for Measure Flour • poppy seeds • baking powder • table salt • heavy cream • lemon juice • confectioners' sugar, sifted • table salt • lemon juice • heavy cream