1. Peel and dice the potato, carrots and celery. Peel and roughly chop the onions and garlic. Place the onions and garlic in the bowl fitted with the ultrablade knife. Mix at speed 11 for 30 seconds.
2. Replace the ultrablade knife with the mixer. Add the butter, oil, carrots and celery. Launch the P1 simmer program at 270°F for 4 minutes.
3. Add the stock, chicken, dill, potatoes, coriander, ginger, salt and pepper. Launch the P2 simmer program at 200°F for 40 minutes. Add the vermicelli 5 minutes before the end of cooking.