Preheat oven to 425
In a large bowl: Add the sifted flour. Then add the salt. Whisk to combine.
Using a pastry cutter- Cut 6 tablespoons of cold butter into flour mixture. The flour should be crumbly once the butter is completely cut in.
Create hole in the middle of the crumbly dough and pour cold milk slowly into the mix.
Stir the flour with a spatula to incorporate the milk from the outside in each time adding more and more of the ingredients. Note: Do not stir quickly; the idea is to make sure the ingredients are fully incorporated.
Once the biscuit dough is completely mixed, add in sour cream. Stir. Then add the cheddar. Continue to stir outside in the cheese until incorporated. Be sure not to over mix.
Lastly, add the chives. Stir once or twice to ensure completely incorporated. The biscuits should feel sticky like glue.
Now prepare the pastry mat. Pour a shallow 1/2 cup of flour on the pastry mat and rolling pin.
With your spatula, take the full amount of biscuits and add to dry flour on the pastry mat. Roll around in shallow flour to create a larger dough or a small ball. It should be dry on the outside, wet on the inside.
Flatten the dough into a square (can use a floured rolling pin or your hands but make sure your hands are floured).
Fold the dough. Gather it, then fold it again. The object is to create multiple layers. Once you have flattened and folded it 4-5 times its time to form biscuits.
Create a biscuit by cutting with the top of a cup or a biscuit cutter. You should be able to make at least two biscuits. Place the cut biscuits in the baking dish.
Set the biscuits aside into the greased baking dish.
Make another fold to close the holes. Then cut some 2 more biscuits (or more if you have a smaller biscuit cutter).
Continue to repeat the above process to use all of the dough.The biscuits should be close to each other in the baking dish.
Once all the biscuits are formed and in the baking dish, place them in the oven for 8-12 min. When the biscuits are done, they will appear brown on the bottom and lightly brown on the top.