The Vietnamese word "tỏi tây" refers to "leek" in English. It is a type of vegetable that is part of the onion family and is known for its long green stalks and mild flavor. Leeks are commonly used in cooking to add depth to various dishes, such as soups, stews, and stir-fries.
In more advanced culinary contexts, "tỏi tây" can be used to describe specific cooking techniques, such as sautéing or braising, where leeks are cooked slowly to enhance their sweetness.