This is a recipe we make weekly at work, and they all go up to the hospital coffee shop. We alternate between blueberry one week and cranberry the next. This is a pretty good recipe, I have to say. It makes four big rounds that we cut into eight triangles.
9 cups flour
4 tbsp baking powder
1 1/3 cups sugar
2 tsp salt
2 cups butter
3 cups cream or milk
egg wash & granulated sugar for topping
blueberries, cranberries - frozen - optional
Whisk together the dry ingredients and cut in the butter until it's small pea-size. In a separate bowl, whisk together eggs and cream. Make a well in the dry ingredients and add the wet until combined. Add fruit at this point. It's always better to use frozen fruit so the juices don't saturate the batter with tons of colour. It's an aesthetic thing. Don't overwork the dough, but make sure you get a nice consistent dough. It will be sticky. Turn it out onto a well-floured surface and cut into four even pieces. Pat each piece into a circle about 1" thick. Place on greased baking sheet and cut into desired number of triangles. Glaze with egg wash & sprinkle with sugar. Bake at 350F until golden brown and cooked through.