Making window cleaner

I have a book called "Debt free, Cashed up and Laughing" and it is a book about saving money.

There's a section about cleaning and it tells you how to make your own cleaning products. Basically to save money and use less chemicals.

Soooo, thought I'd try the window cleaner.

Here's the receipe (I guess you'd call it a receipe??!)
1/2 teaspoon shampoo
3 tablespoons white vinegar
2 cups water
1 drop blue food colouring (mainly for safety reasons so that you know what is in the bottle. Label the bottle clearly)

The window last night when I cleaned it with my cleaner! Crappy pic, but look at the clean glass :)