Receta $100 cake

I thought I’d do some investigations, and look for my birthday cake. My Granny and I had birthdays one day apart, so when we were together I used to beg her to make this cake. I don’t know if this is the exact cake, but it was called the $100 cake. I remember the cake was super moist, rich and dense. A person just needed a small slice to be satisfied. The story went  back in the roaring 20's a man eating at the Waldorf Astoria enjoyed this cake so much he asked for the recipe, well the cook gave him the recipe, and he was thrilled. When he got a bill for $100 and that is why it’s called the $100 cake. This may be close, Mom? Cake 1/2 c. butter 4 squares bitter chocolate 1 tsp. salt 2 c. sugar 2 c. cake flour, sifted 2 tsp. baking powder 2…