Mix water, sour cream, shortening, sugar, salt, baking soda, and eggs together.
Add yeast and flour. Knead for 5 minutes.
Let dough rise until doubled.
Roll out in long narrow strip brush half with butter sprinkle with brown sugar and cinnamon cover with opposite half pinch ends and cut and twist.
Bake convection at 330 for 11 minutes.
While they bake, mix together your frosting.
Cool slightly, then frost!