Heat oil in a large soup pot to medium heat.
Add in the onions and garlic, cook until soft but not browned about 5 minutes
Add in the chicken stock or chicken stock and water combination
Add in the potatoes, salt and pepper to taste and bring to a boil.
Reduce heat and simmer until the potatoes are soft about 20 minutes
Remove the pot from the heat and lightly mash the potatoes with a potato masher.
In another skillet, over medium high heat, cook the sausage, stirring until browned.
Add the meat to the soup pot making sure to include any brown crusty bits.
Simmer for five minutes then stir in the kale, and simmer for a few more minutes
Add the lemon juice
Ladle into bowls and enjoy with some Portuguese bread.