Key Lime Cake

• 72 b -ingredients -cake
• 2 eggs at room
• 1 1/2 lime zest (grated)
• 1 lime
• 220 gr all purpose flour (white)
• 200 gr sugar
• 200 gr sifted confectioners sugar
• 160 ml buttermilk -lime syrup
• 50 gr margarine (unsalted)
• 16 ml vegetable oil