Pav Bhaji Classic is the standard, unembellished form of the Mumbai dish: a mixed-vegetable bhaji seasoned with pav bhaji masala, finished with butter, raw onion, cilantro, and lemon, eaten with soft pav. The angle here is restraint. This is the version a stall makes by default when you order without qualifiers, and it sets the reference point against which butter-heavy, cheese, and stuffed variants are judged. Nothing is added to chase indulgence; the dish stands on the balance of a well-cooked mash and a properly toasted roll.
The mash is the whole job. Mixed vegetables, typically potato as the body with tomato, peas, and bell pepper, are cooked down on the griddle and broken with a masher until uniform, with pav bhaji masala and butter worked through. The classic finish is precise and minimal: a controlled amount of butter melted over the top rather than a flood of it, a mound of raw chopped onion for crunch and pungency, a shower of chopped cilantro, and a lemon wedge for acid. The toppings are not garnish; they are the seasoning the eater completes at the table. Good classic bhaji reads as clean and bright: you can taste tomato and the spice blend distinctly, the texture is smooth but not pasty, and the lemon-and-onion finish cuts the fat so the dish stays lively to the last scoop. Sloppy execution shows up as a muddy, over-rich mash where butter masks an underdeveloped base, as raw-tasting onion-tomato that was rushed, or as wilted, stale-tasting cilantro and a missing or dried-out lemon wedge.
The pav is split, buttered, and toasted on the griddle until the cut faces crisp while the crumb stays soft and pillowy. In the classic form the pav is a clean partner, not soaked in fat; it should hold up to repeated scooping without going limp. Plating is consistent across stalls: a bowl of bhaji with its butter, onion, cilantro, and lemon, and pav on the side. Once you start melting extra butter into it, griddling the roll stuffed, or folding in cheese or paneer, you have moved into the named variants, each of which deserves its own article rather than being crowded in here.