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["In large mixer bowl combine 3 cups of the flour and the yeast.", "Heat 2 1/2 cups water, sugar, salt and shortening just till warm 115-120 degrees F.", "Stirring constantly to melt shortening.", "Add to dry mixture.", "Beat at low speed with mixer for 1/2 minute, scraping bowl.", "Beat 3 minutes at high speed.", "By hand, stir in enough remaining flour to make a soft dough.", "Knead on floured surface till smooth (10 to 12 minutes.) Shape into a ball.", "Place in greased bowl and turn once.", "Cover, let rise till double 1-1 1/2 hours.", "Punch down, divide in half.", "Cover let rest 10 minutes.", "Roll each half to 15 x 12"" rectangle.", "Roll up tightly from long side, seal well.", "Taper ends.", "Place each diagonally seam side down, on greased baking sheet sprinkled with cornmeal.", "Gash tops diagonally every 2 1/2 inches 1/8 inch deep.", "Beat egg white just till foamy add 1 tbsp. water", "Brush tops and sides of loaves, and sprinkle with poppyseeds.", "Cover, let rise till double (about 1 hr.) Bake at 375 degrees F.", "till light brown for 20 minutes, brush again with egg white mixture.", "Bake another 20 minutes longer.", "Remove from sheets and cool."]