Dice carrots and onions. Sweat them in a large pot in some olive oil on gentle heat, along with a pinch of salt
Once vegetables are softened, add the ground meat. Keep the heat gentle. Stir with wooden spoon to break up the meat.
When the ground meat is half-grey and broken up, add tomatoes along with some salt. Have enough liquid to cover the solids.
Stir the pot occasionally for 3 hours. Towards the end, add a splash of balsamic vinegar. Taste and adjust for seasoning. Exchange recipes for pickled zucchini and limoncello while waiting to move on to the pasta.
Knead flour with eggs for 10-15 minutes, until elastic. Cover with a towel and let the dough rest for a few minutes
Cut the dough into more manageable, fist-sized pieces. Pass it through the pasta machine on its thickest setting, fold the dough over in half and pass it through again.
Pass the dough through the pasta machine on progressively thinner settings, until dough is about 1mm thick.
Pass the thin sheets of dough through the pasta cutting attachment. Toss tagliatelle with a bit of flour to separate them, picking up and dropping the noodles from at least shoulder height for style.
Allow the bolognese to cool, then refrigerate overnight to develop flavour. Lay pasta out on large sheet pans to dry out.
The next day, reheat sauce on the stove or in the microwave. Boil pasta briefly for 1-2 minutes, then toss in sauce. Top with grated Parmesan cheese and serve.