Put the chestnuts to soak in cold water for two hours. Drain, dry and carve the chestnuts with a deep cut the top to prevent the chestnuts burst.
In a baking dish large distributed chestnuts, turn the oven to 200°C (390F) and cook for 25 minutes, turning from time to time to ensure even cooking.
Once pulled out of oven, let stand covered by a clean kitchen towel for 15 minutes.?Peel and served hot.