This flourless cake from Galicia, Spain, is traditionally made with separated eggs and flavored with citrus and/or cinnamon. We liked it made more simply, with whole eggs and just a small measure of vanilla and almond extracts. A sprinkling of chopped almonds and coarse raw sugar on top of the batter gives the surface a chewy-crisp crust that contrasts wonderfully with the dense, plush crumb of the cake’s interior. Crème fraîche and fresh berries are perfect accompaniments.