Put the first 5 ingredients in a food processor and mix, then add in the butter and mix. Add the milk a little at a time, just until the dough clings together. If it feels too dry add a bit more milk, you'll want it to hold together but still be a smooth dough without being wet or sticky. Turn it out onto a floured countertop. Using a rolling pin and roll it into a rectangle, using enough flour so it's not sticky, roll gently and not too much or they won't turn out fluffy. Fold the dough over onto itself, flatten again and do this 4-5 times so you end up with dough about 3/4-1 inch thick and about 8-9" by 10-11" rectangle. (You're forming the fluffy layers to make the light puffy biscuit.) Use a glass about 2.5" diameter to cut out circles and place onto a
parchment paper lined or buttered
cookie sheet (never Teflon) -- they can be touching just on the sides to get them all onto one pan, but not smooshed together. With the pieces leftover just lightly smush them together and either roll them and flatten into a biscuit shape with your hands, or use the glass to cut circles into the rest of the smushed-together dough until it's all gone. Those last ones won't look as pretty as the first, but they'll taste so good no one will care. :)