A variety of packaged mixes that are prepared in a sauce pan on the stove or in a microwave oven are available. They are usually modeled on Kraft Macaroni & Cheese (known as Kraft Dinner in Canada), which was introduced in 1937 with the slogan "make a meal for four in nine minutes." It was an immediate success in the US and Canada amidst the economic hardships of the Depression. During the Second World War, rationing led to increased popularity for the product which could be obtained two boxes for one food rationing stamp. The 1953 "Better Homes and Gardens Cookbook" includes a recipe using Velveeta, which had been reformulated in that year. The boxed Kraft product is popular in Canada, where it is the most-purchased grocery item in the country.