What method uses half the fat or flour?

Please provide me with more context! I need to know what you are making to understand what method uses half the fat or flour.

For example, are you talking about:

* Baking a cake? Some cake recipes use the "half-and-half" method, which uses half the fat and half the flour of a traditional recipe.

* Making a roux for gravy? Some recipes suggest using half the amount of butter and flour for a thinner gravy.

* Cooking a meal? Some recipes use half the amount of fat in a pan for healthier cooking.

Once I understand what you're trying to make, I can give you a specific answer!