Soak the thick slice of ciabatta in cold water. Dice the bacon very finely. Peel garlic and chop finely. Wash sage, dab dry, pluck leaves and chop about 4 pieces finely. Squeeze bread well.
Mix well with ground pork, bacon, garlic, chopped sage and egg yolk. Season with salt and pepper.
Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Cut the thin slices of bread in half. Dab the cutlets dry, beat them flat between foil and cut them crosswise into 4 equal pieces.
Season with salt and pepper. Spread each piece with 1-2 tsp. bacon mixture and roll up.
Put the schnitzel rolls, bread and the sage leaves alternately on skewers. Place on a baking tray. Drizzle with oil. Pour about 100 ml water on them. Roast in a hot oven for about 20 minutes, turning once.
Tomato salad tastes good with it.