Begin by roughly peeling and chopping your vegetables then place them all in the blender and blits to a very fine dice but quite a puree
Add the blitzed vegetables to a preheated casserole dish with olive oil and simmer on low heat. Partially cover with a lid and leave to gently soften for around 20 minutes, stirring regularly to make sure nothing sticks. The heat should be low, a gentle sizzle. The aim is not to devlep colour on the vegetables.
Whilst the vegetables simmer, fry off the pancetta over medium high heat in another pan until it starts to colour, then add the mince and cook through until well browned, breaking it up with the back of the spoon as you go.
Once the vegetables have softened and visibly reduced slightly, add the browned mince and stir to fully combine.
Add the chopped rosemary, stir and cook for 2 minutes
Add the tomato puree and cook out for 2 minutes
Now add the glass of red wine and bring to a lively simmer - continue to cook until virtually all the red wine has reduced down to nothing
Add the tomatoes and water then bring up to the boil and reduce to a gentle simmer
Simmer uncovered for 2 hours, stirring regularly and adding more water if required
After 2 hours, add the whole milk, stir and simmer for 30 minutes
Cook the spaghetti around 10 minutes from when you want to serve.
Taste and seaason, then add the sauce to the drained spaghetti and toss to combine thoroughly before plating in pasta bowls
Finish with freshly grated parmesan and fried rosemary sprig (if using)