Saute the Onion, Carrot and Celery in Oil in a Large Saucepan for 10 Mi until Soft and Lightly Browned, Stirring from Time To Time.
Add the Garlic, Lentils, Cumin, Coriander, Parsley and Lemon Juice. Mash By Hand or Puree in a Processor until the Mixture Holds Together. Season With Pepper. With Floured Hands, Shape the Mixture in 10-12 Flat Burgers, Using a Palet Knife. Coat the Burgers With Flour.
Saute the Burgers in a Little Oil until Crisp and Browned, Turning Them Over Carefully To Cook the Second Sid
Drain on Paper Towels and Serve Garnished With Watercress and Tomatoes.