Ingredients
for cake
2 cups all purpose flour
2 tsp baking powder
1/2 tsp salt
8 T unsalter butter at room temp (1 stick)
1-1/2 cup sugar
1 tsp vanilla extract
3/4 tsp lemon oil
4 eggs plus 2 additonal yolks
1 cup buttermilk

for glaze
1/4 cup water
1/4 tsp lemon oil
1/3 cup sugar
1 T rum

Directions
for cake:
put a baking rack in the middle of the oven, preheat to 325°. grease and flour a daisy cake pan (these are from W-S...stupidly expensive...use a regular cake pan). over a sheet of waxed paper, sift together flour, baking powder, and salt. in a bowl, use an electric mixer (the kind that has a bowl attached so you can toss stuff and not stop) with a flat beater to beat the butter until smooth (1-2 min). gradually add sugar, beating until light and fluffy (3-5 min). beat in vanilla and lemon oil. add eggs & yolks one at a time time, beating well after each addition. reduce speed to low. fold in flour mixture in three additions, (half of the flour mixture, then buttermilk, then second half of the flour mixture) until smooth and combined. put batter in the pan and toss into oven until toothpick is clean (about 50 min). let cool for 10 minutes then flip it out of the pretty daisy pan. :-)
for glaze:
stir together water, lemon oil, sugar, and rum until sugar disolves. brush it on the warm cake.