I know Melik has mentioned this cake, so maybe I'll be nice and make it for him... but I'm sure I'll alter the recipe. Found 2 very different recipes and spelling though.

1)
WEINER GUGELHUPF - AUSTRIAN COFFEE
CAKE

3/4 c. butter
1 1/2 c. sugar
3 eggs, separated
2 c. sifted flour
1/2 tsp. salt
3 tsp. baking powder
3/4 c. milk
1 tsp. vanilla or almond flavor

Cream butter, add sugar slowly until light and fluffy. Beat in egg yolks. Mix flour, salt and baking powder. Combine milk and flavoring and add flour mixture and milk alternately until all used up. Beat egg whites until stiff and fold into mixture. Spoon into well greased bundt form pan. Bake at 350 for about 1 hour and 10 minutes. Cool cake. Loosen cake gently around the rim.
Optional: Raisins, maraschino cherries or almonds.

2)
Marble Cake Recipe #70003 (recipezaar)
I got this recipe from my girlfriend Marichen, many years ago, had to convert from metric to cups and tsp and Tbls. She came from Germany and brought this recipe with her. Its on the order of a pound cake but a little more moist and the texture is a little courser. One of my favorites. Hope everyone who tries it enjoys.
1/2 lb margarine
1 cup sugar
1 teaspoon vanilla
4 eggs
4 cups flour
4 teaspoons baking powder
3/4 cup milk
1/4 cup cocoa
3 tablespoons sugar
3 tablespoons milk
Icing
2 cups powdered sugar
1/4 cup fresh lemon juice
1/4 cup water

Heat oven to 350 F.
Grease a foil lined 2 1/2" to 3" by 15" loaf pan (long and thin).
Cream together the margarine and sugar till smooth.
Add vanilla and eggs.
Now add milk and flour a little at a time then add in baking soda.
Mix well, will be a slightly stiff mixture.
Now put 1/2 of the mixture in your loaf pan.
In the remaining mixture add 1/4 cup of cocoa, 3T. sugar and 3 T. milk
Mix well
Now put this chocolate mixture on top of the vanilla mixture and swirl a spatula thru it to marble
Bake for 1 hour and 10 minutes.
Just before cake is done mix the lemon juice, water and powdered sugar together to make a thin icing.
When cake is done remove foil and cake from pan, leaving foil under the cake.
Now while the cake is still warm drizzle the icing over the cake.
Enjoy

15 servings Change size or US/metric
Change to: servings US Metric

1 hour 25 minutes 15 mins prep