The Vietnamese street-food sandwich made with a baguette, pâté, pickles, herbs, and meat is called bánh mì.
The name originally refers to bread, especially the Vietnamese baguette that developed during the French colonial period. Vietnamese bakers adapted the European loaf using locally available ingredients and techniques, producing a lighter, crispier baguette.
Modern bánh mì sandwiches commonly combine mayonnaise or pâté with grilled pork, cold cuts, chicken, or other fillings. Pickled carrot and daikon, cucumber, cilantro, and chili provide acidity, freshness, and heat. Regional versions vary considerably, so bánh mì describes a family of sandwiches rather than one fixed recipe.
Bánh mì is sometimes confused with phở because both are globally recognized Vietnamese foods, but phở is a noodle soup. The sandwich became especially popular internationally after Vietnamese migration following the Vietnam War.