The Pain aux Figues Garni runs on a bread that brings its own sweetness. Pain aux figues is a wheat or part-rye loaf with dried figs worked through the dough, so the crumb is dotted with soft, jammy, faintly caramelised fruit and a low sweetness that carries across the whole slice. A baguette gives a sandwich a neutral, savoury base; this loaf does the opposite, supplying the sweet counterpoint that a savoury filling would otherwise need a chutney or a spoonful of jam to reach. The fig is already in the bread, which is the reason to use it.
That built-in sweetness points straight at the rich and the salty. The classic partners are foie gras and blue cheese: the fruit in the crumb does the work that a fig compote does beside a slice of terrine, and against a wedge of Roquefort the sweet, the salt, and the faint sour of the bread settle together the way they would on a cheese board. A ripe goat cheese, a slice of cured duck, a mature hard cheese all sit well on it. A plain mild filling has nothing to push against and gets flattened by the fruit. The crumb is dense and a little moist from the figs, so it holds a soft, rich spread without collapsing, and it eats slowly, closer to the end of a meal than a quick lunch. A few extra walnut halves or a thin slice of fig are sometimes added on top, doubling what the bread already supplies.
The variations stay on the rich end because the bread points there. The fullest is foie gras on toasted fig bread; the everyday version is a strong cheese, blue or aged or goat, the fruit and the salt carrying each other. From there it bends toward the cured-meat pairings and the open tartine, the slice toasted to bring the fig forward under something rich. It belongs to the broader tradition of French sandwiches built on a bread other than the baguette, gathered under Pain Garni & Non-Baguette Breads, and within it the fig loaf is the entry that arrives pre-sweetened, asking the filling to bring salt and richness to meet it.