Using a 6L pot on high heat, saute the onions in oil until slightly transparent and remove to a side dish. Brown the beef.
Put the onions back plus add the chopped chilis, garlic, chili powder and the Auntie Bev's Jerk BBQ Marinade & Sauce.
Mix together and then add the yam, zucchini and mushrooms.
Add the tomato paste, romano beans, and stewed tomatoes and fold all ingredients together.
Bring the mixture to a boil and then turn the heat down to low, cover with a splash shield and let simmer, stirring every 10-15 minutes.
When the majority of the liquid has evaporated the chili is ready, approximately 1-1.5 hours.
Serve with your favorite corn chips.