A 10-day Sourdough cake
This is known as the friendship cake!it's a bit like a chain letter
in that you have to find a set of friends to pass on the starter to.
During preparation put the starter into a very large bowl (it foams
up), and cover with a lid or with cling wrap.

(Starter and one cake)
1 cup cake starter
1 cup normal milk
1 cup self-raising flour
1 cup sugar
2 cups self-raising flour
1 cup sugar
2/3 cup oil
2 tsp cinnamon and vanilla
2 eggs
1/2 cup raisins
1/2 cup nuts (or other fruits)
15oz pineapple chunks, drained (one can)

Procedure (starter)

Blend the "starter feed" together, and then hand mix in the starter.
I find it easiest to mix the flour and sugar together dry, add the
milk to the starter, and then slowly add the flour and sugar to the
liquid. The starter should never be beaten with a blender or
refrigerated. Pour the mixture into a large bowl, cover with cling-
film or a damp towel, and leave to brew.
Thoroughly mix the sourdough, then leave to brew again.
As day 1
As day 2
Print off three copies of this recipe. Here now is why this is called
a friendship cake. Take 3 cups of Sourdough mixture, and give them away with copies of the recipe as starters to your friends. Then proceed with the baking.
Procedure (making the cake)
Blend all ingredients thoroughly with remaining starter.
Pre-heat oven to (English gas mark 4)
Pour mixture into a well-greased baking tin.
Bake for 1 3/4 hours (less in a fan oven), cool.
If you don't get cake starter from a friend, you can probably buy it
in a baking supply store.
Vary the spices to taste. The cake is quite pleasant if you forget

Difficulty: easy.
Time: 10 days brewing starter, 30 minutes preparing cake, 2 hours baking and cooling.
Precision: measure the ingredients.