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
Welsh cuisine such as cawl, and traditions grew around their use. One tradition, which was still in place at the start of World War II, was that villagers could plant an row of potatoes in a neighbouring farmer's field for each labourer the household could provide at the time of harvest. Whilst there are a large number of dishes that can be considered Welsh due to their ingredients, there are some which are quintessentially Welsh. Dishes such as cawl, Welsh rarebit, laverbread, Welsh cakes, bara brith (literally "speckled bread") or the Glamorgan sausage have all been regarded as symbols of Welsh food.