Biscuits - A Light Touch
To anyone in the South, or with Southern roots, biscuits are the mark of a good cook. Back in the day, they were made with a lot of lard and/or butter. The layers of flour and chilled fat (butter, lard, shortening) are kept separate until the dough reaches the oven heat. The water in the strata of butter starts to steam lifting the layers of flour. If you over-mix the two before baking, the lifting process never gets off the ground.
The best way to reduce the fat for a lighter biscuit is to use reduced-fat dairy products. Low fat cream cheese and sour cream work particularly well because they are very viscous in texture.