1. Reconstitute the dehydrated potato flakes in milk for about 20 minutes.
2. Peel the garlic clove and place it in a meat grinder with the Mortadella, bacon, beef, rehydrated flakes, chestnuts and the onion.
3. Transfer the grinded mixture in the mixing bowl of a food processor fitted with the leaf beater. Add the cognac, thyme, grated cheese, eggs and sprinkle with salt.
4. Work the mixture until all ingredients are combined.
5. Wash the capon well with cold water and dry with absorbent towel.
6. Place the capon on transparent sheet paper and using a tenderizer pound the meat.
7. Spread the stuffing along the cavity of the capon. Press the filling well and tie up with kitchen twine.
Suggestions for consumer: roast the capon in a combination oven to 145 °C until the core temperature is 75 °C.