Welsh cuisine butter was the primary cooking medium and basis for sauces. Salt was an important ingredient in Welsh butter, but also in early Welsh cheeses, which would sit in brine during the cheesemaking process. The Welsh were also early adopters of roasting cheese. An early incarnation of Welsh rarebit was being made in medieval times, and by the middle of the 15th century rarebit was considered a national dish. The acid soil of Wales meant that the milk produced by their cattle created a soft cheese, which was not as good for roasting, so Welsh people would trade for harder cheeses
Scallion abundance, as an accompaniment to tofu, noodle dishes, hot pots and stir fries. In Vietnam, Welsh onion is important to prepare "dưa hành" (fermented onions) which is served for Tết, the Vietnamese New Year. A kind of sauce, "mỡ hành" (Welsh onion fried in oil), is used in dishes such as "cơm tấm", "bánh ít" and "cà tím nướng". Welsh onion is the main ingredient in the dish "cháo hành", which is a rice porridge used to treat the common cold. In India, it is eaten as an appetizer (raw) with main meals. In north India, coriander, mint and onion