Heat oven to 400 degrees. Combine dry ingredients--flour, sugar (if using), baking powder, and salt; whisk to combine well. Cut butter into dry ingredients using pastry cutter or fork; mixture should resemble coarse crumbs.

Add orange zest and white chocolate chips. Mix in honey (if using), egg, and orange juice; mix well. Mixture should come together in a soft dough, leaving the side of bowl with no dry flour on the bottom. If dough is too dry, add milk, 1 tablespoon at a time, until dough is soft but not sticky.

On a very lightly floured surface, knead dough about 10 times or until smooth and consistent in texture.

On an ungreased cookie sheet, form dough into a circle about 1/2-inch thick. Using a pizza cutter (or sharp knife), cut dough into 8 wedges. If desired, brush with a small amount of milk, cream, or egg yolk.

Bake about 15 minutes (check after 14 minutes) or until golden brown and fully baked in the middle. Cut through wedges again to serve; serve warm.