Slice the chicken in half to obtain 2 thin slices.
Add a slice of prosciutto on top and then a leave of sage. With a toothpick, pinch the the ingredients together: you want the toothpick to go through the chicken, prosciutto and sage.
On a clean plate add the flour and coat the bottom of the chicken slices with it (the side without prosciutto). Remove the excess flour.
Repeat for all for chicken slices.
On a large pan add butter and oil (you really don’t need much, in case you are worry about calories).
Add the chicken to the pan (with the prosciutto side up).
Cook for a few minutes until you’ll see a nice, golden caramelised crust (like in the video). (Don’t overcook, the top should be slightly raw, it will cook later once you flip it)
At this point add the wine. Let it evaporate completely and the flip the chicken slices.
Cook for less then a minute on this side.