The real Bologna version: meat-forward, not tomato-forward. A single cut of beef chuck browned hard, deglazed with white wine, and braised low and slow with just a spoon of tomato until it turns rich and glossy. No milk, no second meat, no garlic — and always on tagliatelle, never spaghetti. Finished in the pan with butter and Parmigiano so the sauce clings to every ribbon.
Skipping the milk is perfectly fine — you simply lose its silkiness and gentle tenderizing, which matters less with a single robust meat. To compensate, keep the braise gentle and well-lubricated: an aggressive boil will dry the beef out and turn it grainy, while a bare simmer under a loose lid keeps it tender for hours. Top up with stock or water the moment it looks dry.
With one meat and no pancetta you also lose a little savory depth, so make it back at the stove: brown the beef hard until it truly colors, and be generous with salt at the end. And serve it on tagliatelle, not spaghetti — the wide, porous ribbons hold a chunky meat sauce the way thin round strands never will. That pairing is the whole point of a Bolognese.