Great way to use up celery! I didn't want to use potatoes because of the carb count, so I opted for turnips because the have less. I also forgot the leeks at the grocery store, so I just used onion. I did add a good bit of garlic and 1/2 teaspoon of nutmeg. The soup was very luxurious, I felt like I was eating a full fledged, full calorie cream soup!