In a large dutch oven, saute the onions in the olive oil over medium heat for about 3-5 minutes.
Add the remaining ingredients and allow the soup to simmer for about 30 minutes.
Garnish with chopped cilantro.
Optional - can also garnish with sliced avocado and chopped onions.
Notes
Depending on how you cook the pork roast, be careful when adding salt to the soup. If your pork is already seasoned, you may not need any additional salt when making the soup.