• 2 sticks (8 oz.) unsalted butter, softened, plus additional for buttering pan
• 3 cups (345 g) sifted cake flour (not self-rising; sift before measuring) plus additional for dusting
• 7 large eggs, at room temperature 30 minutes
• 1 cup (8 oz.) heavy cream
• 10" tube pan (4½" deep; not with a removable bottom) or a 10" Bundt pan (3¼" deep; 3-qt. capacity)