4 sweet potatoes
3 tbsp unsalted butter , more to serve
1 tsp salt
1/4 tsp ground cinnamon
⅛ tsp ground nutmeg
½ teaspoon freshly ground black pepper
Pinch freshly grated nutmeg
1 tbsp maple syrup , or to taste
¼ cup (60ml) cream, or more as needed
chives or parsley to garnish