The Parisian Club is the American Club after it has spent a year in France and learned to use a knife and fork. The format imported cleanly, including three slices of toasted bread, chicken, lettuce, tomato, bacon, mayonnaise, cut into four triangles, held with cocktail picks, but each component arrived at a French café and was quietly upgraded. The bread is pain de mie, the white sandwich loaf, but toasted with more care than the American original suggests. The chicken is often poached rather than grilled, then sliced cleanly. The mayonnaise is sometimes thinned with crème fraîche, or replaced outright with a dijon-crème dressing. The bacon, somewhat shockingly to American visitors, is generally not the same product. French poitrine fumée is closer to Italian pancetta than to American breakfast bacon.
What survives intact is the architectural pleasure of the Club. Three layers of toast give the sandwich its structural integrity. Cocktail picks hold the whole stack together long enough to be sliced into wedges. The diagonal cuts open up cross-sections so each triangle shows its layers. It is one of the few sandwiches that is genuinely improved by being eaten with a knife and fork, because the pile is tall enough that biting into it head-on collapses the geometry. At a French hotel restaurant or brasserie the Club arrives flanked by frites and a small green salad, an entirely respectable lunch that signals to the kitchen that the guest is not looking for an adventure.
The variations follow the dressed-up café logic. The Club Tomate adds slices of tomato in the middle layer for the summer menu. The Club Saumon swaps the chicken for smoked salmon and the bacon for cucumber, producing what is essentially a tea sandwich pretending to be a Club. The Club Végétarien drops the meat entirely in favor of avocado, egg, and grilled vegetables, which is closer to a layered bistro salad than an Anglo-American Club, but the format carries the name. The original Anglo-American Club lineage and its many world variations have their own Club Sandwiches tradition. The Parisian read is one regional accent within it.
The sandwich is best understood as French café cuisine doing what it does well: taking a clear foreign idea, refusing to alter the structure, but quietly raising the materials a notch or two. The result is a sandwich that an American visitor recognizes immediately and a French diner orders without irony. That double-citizenship is the point.