Mushy peas Mushy peas Mushy peas are dried marrowfat peas which are first soaked overnight in water with sodium bicarbonate (baking soda), then rinsed in fresh water and simmered with a little sugar and salt until they form a thick green lumpy mash. Sometimes mint is used as a flavouring. In Northern England and the Midlands they are a traditional accompaniment to fish and chips, although their appeal has spread. All over Britain, but particularly in Northern England, they are commonly served as part of the popular snack of pie and peas (akin to the South Australian pie floater, but with mushy
Ground freezing the Big Dig used ground freezing during some of its tunneling, to allow its wide tunnels to be built under or through soil that supported existing infrastructure that would have been difficult or expensive to support using more traditional excavation methods. Some ground freezing projects use common salt brine as the refrigerant, but other projects benefit from using more exotic refrigerants, like liquid nitrogen. In Northern Canada and Arctic Alaska, passive pipe systems are used that do not require any external power to keep the ground frozen. These systems use in-ground evaporators and above-ground radiators filled with liquid refrigerant. When