Vietnam.

The foundation of the whole cuisine is nước mắm — fish sauce, fermented from anchovies and salt, some of the best of it aged in wooden barrels on the island of Phú Quốc. It seasons marinades and braises the way salt does elsewhere, and diluted with lime, sugar, water, garlic and chile it becomes nước chấm, the dipping sauce that sits on virtually every table. A Vietnamese cook is judged on the balance of that little bowl.

Rice is the second pillar, and it appears in more forms than almost anywhere else: steamed grain at every family meal, flat phở noodles, round bún vermicelli, translucent rice paper for summer rolls, fermented into vinegar, ground into the batter for sizzling bánh xèo crêpes. Wheat plays a supporting role inherited from France — the bánh mì baguette, crisp-shelled and light, may be the most successful colonial leftover in the world, split and stuffed with pâté, pickled carrot and cilantro.

Technique leans on water and fire rather than fat. Long-simmered broths, skimmed obsessively until clear, underpin the noodle soups. Charcoal grilling flavors bún chả and countless street skewers. And the most distinctive move in the repertoire is nước màu — plain sugar cooked to a bitter-edged dark caramel that gives braised dishes like thịt kho their mahogany color and depth. Fresh herbs are treated as vegetables, not garnish: mint, Thai basil, perilla, sawtooth coriander and fish herb are piled onto plates and eaten by the handful.

Geography splits the kitchen three ways, and the differences are real. The North, cradle of phở, cooks with restraint — subtle broths, black pepper over chile, little sugar. The Center, around the old imperial capital of Huế, is the spiciest region and favors refined, labor-intensive small dishes descended from royal court cooking. The South cooks sweeter and more abundantly, with coconut, tropical fruit and a wider herb basket from the Mekong Delta.

Meals are communal: a pot of rice, several shared dishes, a canh (light soup), and chopsticks reaching across the table. Street food is not a lesser category but the proving ground — the phở stall that does one dish for forty years is the national ideal of mastery.