I seriously chop the fuck out of the onion, carrots, garlic & celery (only if I've got tatty celery wanting eating; I don't find it essential) to avoid putting off veg squeamish kids. I'm occasionally guilty of yeeting in a grated courgette or two. Chopped bacon, ham, chorizo or anything piggy if there is any. Leftover sausages work...
Sweat the veg until soft. Add mince, plus chopped chicken liver. Once that's all browned, add a glug of milk to simmer down.
Then either lots of crushed tinned tomatoes OR if you're me & live somewhere hot, slow cooker tomato sauce full of bonus stealth veg.
A couple of stock cubes if the veg were a bit drab, just s&p if not.
At this point I generally lob in any leftover wine, white or red, & am not above rinsing in an empty ketchup bottle. Half a jar of tomato puree, good shake of oregano/basil/mixed Italian herbs. Parmesan rind if there is one.
Let the whole thing quietly blip away on the stove for a couple of hours.
Authentic, no. Tasty, yes.
& absolutely don't pour any fat off whatsoever!