In large pot, combine water, bay leaf, half of onion, green pepper, and 1/2 tbs of mint and bring to boil.
In bowl, combine chicken, beef, other half of onion, tomato, oregano, corn flour, pepper, garlic, and salt and mix well.
Form 1-inch meatballs and place meatballs in boiling water and lower heat.
Cook over low heat for 30-45 minutes.
Add carrots, cabbage, and celery.
Cook over low heat for 25 minutes.
Add corn and zucchini.
Cook for another 5 minutes.
Garnish with cilantro and rest of mint.
Ready in 1 hour and 20 min.