2 tablespoons dark amber maple syrup, grade A or B
1/2 teaspoon grated orange zest
1/2 teaspoon balsamic vinegar
3/4 teaspoon kosher salt, plus more as needed
Freshly ground black pepper
Preheat the oven to 400F. Pierce the sweet potatoes 2 or 3 times with a fork. Bake in a roasting pan for 45 to 60 minutes, until tender. Cut the potatoes in half, lengthwise. Hold the sweet potatoes with a potholder or towel and scoop out the potato flesh into a food mill or ricer. In a medium saucepan, heat the butter, syrup, zest and vinegar over medium heat. Remove from the heat and mash the sweet potatoes in the pan. Stir to combine evenly. Season to taste with salt and pepper. Serve.