Winemaker's Grape Cake Recipe | Epicurious

Ingredients

• Equipment: One 9-inch (23-cm) springform pan
• Butter and flour for preparing the cake pan
• 2 large eggs, at room temperature
• 2/3 cup (135 g) sugar
• 4 tablespoons (2 ounces; 60 g) unsalted butter, melted
• 1/4 cup (6 cl) extra-virgin olive oil
• 1/3 cup (8 cl) whole milk
• 1/2 teaspoon pure vanilla extract
• 1 1/2 cups (200 g) unbleached all-purpose flour
• 3/4 teaspoon baking powder
• A pinch of sea salt
• Grated zest (yellow peel) of 1 lemon
• Grated zest (orange peel) of 1 orange
• 10 ounces (300 g) small, fresh purple grapes (see above for varieties)
• Confectioners’ sugar, for garnish