What can i make with just flour, water and sultanas?
If you have margarine or butter, you can make scones.
You could probably put it all in a food processor and make some sort of paste, but you really need eggs and sugar to make a cake or anything else.
There is nothing healthy you can make with these three ingredients. However, you can add a few other ingredients such as milk, butter and eggs to bake a cake. You will find simple baking recipes from the following site http://www.foodnetwork.com/topics/easy-baking/index.html.
If you have an egg you can make dumplings. 2 cups flour 1 cup water1 eggPinch of salt Mix with spoon until blended. Then spoon into salted boiling water in small a little than a the size of a quarter. Boil until they all float at the top.
I dunno what sultanas is, but flour salt shortening (or lard which is the best tasting), and water makes some awesome tortillas