Syrup-soaked cakes, usually made with semolina and called tishpishti or namoura, are popular throughout the Middle East. With its stained-glass effect from the variegated colors of blood oranges, this upside-down cake, which gets its nubbly texture from sunny cornmeal, is drenched in a sophisticated ruby-red blood-orange syrup. Use fine-grind cornmeal or polenta; stone-ground meal doesn’t get tender enough in baking.