In a large pot, heat bacon grease or olive/grapeseed oil.
Add in the onions, carrots and celery and saute for 5 minutes or until tender and just browning.
Season with salt and pepper.
Add in garlic and saute for 1 minute.
Add in pork, break it up and allow it to brown.
Add in tomato paste, stirring to combine it with the meat and vegetables.
Add in wine, water and Thyme.
Season with additional salt and pepper and if adding sugar do so here (see notes).
Turn heat down to low and allow bolognese to simmer for 20-30 minutes, checking back often to stir and see if additional liquid (water or wine) needs to be added.
If you happen to have a Parmesan cheese rind, add it or a piece of it to the sauce (not necessary, just a nice way to use it up). And if you really enjoy garlic, add in some additional garlic for a stronger garlic flavor (adding some in towards the end gives a stronger flavor).
Add in a few shakes of red pepper flakes (more if you like heat) and maybe additional salt, taste and decide.
If you have the time, allow the bolognese to sit off heat for 15-30 minutes before serving, reheating if necessary. This deepens the flavor in my opinion and its fantastic the next day as well.
Serve over your favorite pasta ( I like it over rigatoni best), adding fresh shaved Parmesan if you enjoy it.