Wash potatoes; they may be used either peeled or
     with peels still on.  Grate by hand, or in food 
     processor.  Measure 4 cups grated potato.

     Beat egg until thick.  Add potatoes, onion, flour, and 
     salt.

     Heat oil in skillet over medium high heat.  Drop 
     potato mixture into hot oil to form pancakes, adding
     a little of the liquid to each latke.  Press down. 
     When nicely browned, turn to brown other side. 
     Fry slowly, so latkes will be done in middle.  Remove
     to paper towels to drain. 

     Serve with sour cream, apple sauce, or butter.

     Makes 4-6 servings.

     Note:  If you substitute matzoh meal for the flour, 
     this is suitable for Passover.