The sweetness of this dish is offset by the spiciness of the chili powder.
Cook bacon in a large saute pan over medium heat until browned and crisp, about 12 minutes. Using a slotted spoon, transfer bacon to paper towels to drain. Reserve 2 tablespoons bacon drippings in pan, and pour off excess.
Add butter to pan with drippings. Melt over medium heat. Add sugar, cloves, and chili powder. Cook, stirring, until fragrant, about 1 minute. Add sweet potato, squashes, stock, wine, salt, and bacon, and stir gently. Bring to a simmer. Cover, and cook until vegetables are tender, about 20 minutes.
Uncover, raise heat to medium-high, and cook until liquid is syrupy, about 5 minutes. Carefully invert pan onto a serving platter. Serve immediately.
