• 1½ cups (300 g) granulated sugar
• 1 cup (2 sticks) unsalted butter, room temperature
• 1 large egg, room temperature
• 2¼ cups (281 g) all-purpose flour
• ¼ tsp. freshly grated nutmeg
• 2 tsp. green cardamom seeds (crack pods and remove seeds if needed)
• 1 tsp. black peppercorns
• 1 lb. (453 g) powdered sugar
• 3 Tbsp. light corn syrup
• 5 Tbsp. fresh lemon juice
• Teal gel food coloring (such as AmeriColor soft gel paste #110)
• ¼ cup salted roasted almonds, coarsely chopped
• Edible gold metallic paint, well shaken (optional)
• Teal chunky sugar (such as Layer Cake Shop Teal Chunky Sugar; for decorating)
• Light blue chunky sugar (such as Layer Cake Shop Light Blue Chunky Sugar; for decorating)
• A 3½" diamond cookie cutter (optional)