saute linguica until some of fat is rendered. Add onions and sweat until soft. Add chipotle puree, agave nectar and stir for 3 minutes. Add can of tomato puree and chicken broth. Bring to a boil, then simmer. Add cooked chicken, corn, and cumin. Simmer for about an hour. Add chopped cilantro at the last minute. Serve with tortillas and lime wedges.