popular book in American homes. Highly processed foods of the mid-20th century included novelty elements like multi-colored Jell-O using various chemical food colorings, prepared breakfast cereals marketed to children with large amounts of sugar and artificial colors (e.g. Froot Loops). Fruit-flavored punches made with artificial fruit flavorings (e.g. Tang, Hi-C). Mid-20th-century foods also added novelty packaging elements like spray cheese in an aerosol can, pimento-stuffed olives, and drink pouches. The development of the microwave oven resulted in the creation of industrial food products and packaging intended to take advantage of the opportunities and overcome the unique challenges of that technology. Microwave popcorn is an example of such a product. Throughout the second half of the 20th century the US commercial food system has become increasingly dependent on subsidized maize (corn) production to provide feed for livestock and ingredients for human foods such as high-fructose corn syrup. It is estimated that the typical American gets 70 percent of their carbon intake from maize (corn) sources. The last half of the 20th century saw the development of controversial technological innovations intended to lower the cost of, improve the quality of, or increase the safety of commercial food including: food irradiation, genetically modified organisms, livestock treated with antibiotics/hormones, and concentrated animal feeding operations. Activists have raised concerns about the wholesomeness, safety, or humaneness of these innovations and recommend alternatives such as organic produce, veganism/vegetarianism, and locavore diets. Ethnic influences One signature characteristic of American cooking is the fusion of multiple ethnic or regional approaches into completely new cooking styles. For example, spaghetti is Italian, while hot dogs are German; a popular meal, especially among young children, is spaghetti containing slices of hot dogs. Since the 1960s, Asian cooking has played a particularly large role in American fusion cuisine. Some dishes that are typically considered American have their origins in other countries. American cooks and chefs have substantially altered these dishes over the years, to the degree that the dishes now enjoyed around the world are considered to be American. Hot dogs and hamburgers are both based on traditional German dishes, but in their modern popular form they can be reasonably considered American dishes. Pizza is based on the traditional Italian dish, brought by Italian immigrants to the United States, but varies highly in style based on the region of development since its arrival. For example, Chicago style has focus on a thicker, taller