Boil the pancetta for 10 minutes in salted water

Prepare the marinade

Toss the meat in the marinade overnight or for at least 5 hours

Cook for 20 min at 200c. 15min if in air fryer

Add onions and butter into the pan let them start browning

Add water, vinegar and salt and lower the heat

Wait until the water completely evaporates

Add 1 tsp baking soda

Turn up the heat and press down the onions to the pan

Leave for 30” then stir and press down again

Repeat until onions are almost done

Add sugar and pepper