First attempt at low fat alkaline soft drink cake

Adapted from this "make your own cake mix" recipe. If you don't care about fat or acid this one also looks interesting.

This isn't what I made. This is the adaption for next time based on what went wrong this time. (not enough sugar or salt)

Ingredients (very approx):
2.5 cups sifted flour
1/4 tsp salt
1 cup sugar
1 3/4 tsp baking soda
1/4 cup cold butter
1 egg
a bit under a can of softdrink

Method:
Preheat oven to 180 C, line pan with paper.
Mix dry ingredients plus butter with a handmixer.
Add egg and softdrink, mix with mixer, add to pan and bake for approx 40 mins (check at 30 mins).

I used Bundaburg Guava drink. I think next time I'll make it with that with added apple.