In a large bowl, STIR together 1 cup flour, yeast, and salt; ADD warm water.
BEAT with an electric mixer on low/medium speed 30 seconds, SCRAPING sides constantly; BEAT on high for 3 minutes.
STIR in olives and sage; using a spoon, STIR in as much of the remaining flour as you can.
TURN dough our onto lightly floured surface; KNEAD in enough remaining flour to make a stiff dough that is smooth and elastic (8 - 10 minutes).
SHAPE dough into a ball; PLACE in a lightly greased bowl, turning once to grease surface.
COVER and let RISE in a warm place until double in size (45 minutes to 1 hour).
PUNCH dough down;TURN out onto a lightly floured surface; DIVIDE in half; SHAPE into balls; COVER, let rest 10 minutes.
Lightly GREASE 2 baking sheets (or baguette pans); SPRINKLE with flour.
ROLL each portion of dough into a 14x5-inch rectangle; starting from a long side, ROLL UP, jelly roll style.
SEAL well; PINCH ends and PULL slightly to taper.
PLACE seam side down on prepared baking sheets/pans.
In a bowl, STIR together egg white and water; BRUSH some over loaves.
COVER; let rise until nearly double in size (35-45 minutes); PREHEAT oven to 375 F.
With a knife, MAKE 3 or 4 diagonal cuts about 1/4 inch deep across top of loaves.
BAKE 20 minutes; BRUSH again with egg white mixture; continue BAKING 10-15 minutes more or until bread sounds hollow when you tap the top.
Immediately REMOVE bread to wire racks; COOL.
2 1/2 teaspoons dried sage, crushed, may be substituted for the fresh sage.
Per Serving (excluding unknown items): 135 Calories; 1g Fat (4.3% calories from fat); 5g Protein; 27g Carbohydrate; trace Dietary Fiber; 0mg Cholesterol; 82mg Sodium. Exchanges: 2 Grain(Starch); 0 Lean Meat; 0 Fat.