How to Make It
Heat oil in a Dutch oven over medium. Add onion and garlic; cook, stirring occasionally, until tender, about 5 minutes. Add chorizo; cook, stirring occasionally, 3 minutes. Add stock, salt, pepper, potatoes, and tomatoes; increase heat to high. Bring to a boil. Partially cover pan, reduce heat to medium-low, and simmer 15 minutes. Stir in kale; simmer until potatoes are tender and kale softens, about 5 minutes.