
1 (¼-ounce) envelope active dry yeast (2¼ teaspoons)
½ cup warm water (110°F to 115°F)
5 cups all-purpose flour
1 cup shredded sharp Cheddar cheese
¼ cup granulated sugar
1 tablespoon dried Italian seasoning
1 teaspoon baking powder
1 teaspoon baking soda
1 teaspoon salt
½ cup vegetable shortening
2 cups buttermilk
1 large egg white, beaten
Fresh thyme leaves