Buttermilk Braid
["2 pkg. dry yeast", "1/2 c. warm water", "6 Tbsp. shortening", "2 Tbsp. sugar", "2 tsp. salt", "1 1/2 c. buttermilk", "3 eggs (reserve 1 yolk)", "7 c. unbleached flour"]
["In a small bowl, dissolve yeast in warm water and add a pinch of sugar.", "Do not stir.", "Let stand 10 minutes."]
["yeast", "warm water", "shortening", "sugar", "salt", "buttermilk", "eggs", "flour"]