In large bowl, dissolve yeast in 3/4 cup warm water. Beat in granulated sugar, the salt, eggs, egg yolk, 1/2 cup butter and 1 3/4 cups of the flour with electric mixer on medium speed 10 minutes, scraping bowl constantly. Stir in remaining flour, the almonds, citron, cherries, raisins and lemon peel. Scrape batter from side of bowl. Cover and let rise in warm place 1 1/2 to 2 hours or until double. (Dough is ready if indentation remains when touched.) Cover and refrigerate egg white.