In a large skillet, brown turkey over medium-high heat.
Break it up as it cooks into smaller pieces and season with salt and cumin.
When meat is browned and cooked through, add onion and garlic; cook 3 minutes over medium heat.
Add the can of tomatoes, sweet potato, tomato sauce, water, cumin, chili powder, paprika, salt and bay leaf.
Cover and simmer over medium-low heat until potatoes are soft and cooked through, about 25 minutes, stirring occasionally.
Remove the lid, cook an additional 10 minutes, until reduced. Remove bay leaf.
Garnish with sour cream, bits of cilantro and a pinch of paprika.