In a 4-quart soup pot, prepare onions, scallions and garlic the Enlitened way (spray non-stick skillet with spray and heat oil over medium, add leeks and onions, cook until brown, stir in garlic cloves and a few drops of water, cook for a few more minutes, stir so it doesn't stick).
Add celery, seasonings including soup powder and water. Mix well and bring to a boil.
Lower to medium heat and cook for approximately 1 hour. Cool sliglhtly.
Sprinkle with soy or regular flour and blend with an immersion blender. Bring just to the boiling point while stirring with a wooden spoon.