Whatever you serve this with, these will be the highlight.
Don't use all the buttermilk if you don't have to; don't knead the dough or mix anymore than is required to get it to hold together. If you don't have a biscuit or cookie cutter, use something such as a drinking glass that will give you the right width. 4 oz / 115g of cheddar, when grated, equals 1 cup.