Cut the liver into slices.
Put a tablespoon of seasoned flour into a food bag and toss the liver in it.
Heat a little oil in a frying pan and fry the sliced onions and bacon then remove it from the pan.
Put the liver into the pan and seal all sides.
Add the onions and bacon.
Crumble a stock cube in if required.
Add hot water from cooked veggies and boil stirring to thicken.
Simmer until the liver is cooked as much as you like it. (I prefer it pink in the middle, like a steak) don't overcook or it will go tough.
Enjoy.