- Mix together the butter, garlic, lime rind and nutmeg and beat well. Roughly chop the chestnuts and add into the butter and mix thoroughly.
- Spoon the butter on to a piece of greaseproof paper and roll into a sausage shape.
- Refrigerate until ready to use. You can do this well in advance and freeze it. Just remember to transfer from the freezer to the fridge on Christmas Eve.
- Par-boil the sprouts in a large pan of boiling salted water for 5 minutes then drain and return to the pan.
- Heat the oil in a large frying pan or wok and fry off the sprouts until slightly charred.
- If you're adding bacon, fry this until golden then chop and add to the sprouts.
- Add a few slices of chestnut butter to the sprout pan and toss gently. Serve with additional slices of chestnut butter.