Preheat oven to 400°F.
Grease large glass mixing bowl; set aside.
In separate large mixing bowl combine 1 1/2 cups flour, yeast, sugar, salt, baking soda and Buttermilk Blend.
In small saucepan heat water and shortening until warm (120°F).
Add warm water mixture to flour mixture and beat at high speed for 3 minutes.
Add additional flour, up to another 2 1/2 cups, kneading until soft, smooth dough ball forms.
Place in prepared bowl, turning to grease all sides.
Cover and let rise 35 minutes.
Punch down and shape into 12 large (18 medium) rolls.
Place rolls close together on greased cookie sheet, or in greased square baking dish, and let rise again until double in size.
Bake 15 minutes, or until golden brown.