Salt the quails and wrap them with the bacon.
Briefly fry the quails prepared in this way in olive oil in a suitable dish.
add a sprig of thyme to the roasting pan and roast the quails at 120 ° for 30 minutes.
Caramelize the grapes in a small pan with the sugar and deglaze with the chicken stock and the vin santo.
Add this stock to the quails and continue roasting for 15 minutes at 150°.
Add a little pepper to taste.