Blend together flour, sugar, baking powder, cream of tartar, thyme and poultry seasoning in a large bowl. Stir in cheese and chives. Cut in butter until only small pieces remain. Add buttermilk; stir just until moistened.
Turn out on lightly floured surface. Knead dough 5 to 6 times, just until dough holds together. Gently pat or roll into an 8 by 8-inch square. Cut into 12 pieces. Place on lightly greased baking sheet about 1-inch apart. Bake for 20 to 25 minutes until biscuits are lightly browned.
Serve hot from the oven with butter. Or, cool for 15 minutes, slice and top with roast turkey and cranberry sauce for a delightful sandwich.