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A staple food is a primary constituent of a diet and provides a large fraction of energy and nutritional needs. Consumed regularly, often daily, these foods are typically inexpensive, plant-based, and calorie-dense. The most common staples include cereal grains and tubers.
Out of the 50,000 edible plants globally, only 15 contribute to 90% of the world’s food energy intake. Rice, corn (maize), and wheat constitute two-thirds of this. Other staples include millet, sorghum, tubers like potatoes, cassava, yams, taro, and animal products such as meat, fish, and dairy.
Regional Influences on Staple Food
Traditionally, the choice of staple food depends on the native plants of a region. However, advancements in agriculture, food storage, and transportation have led to changes in food staples. For instance, roots and tubers like taro, traditional staples in the South Pacific islands, have seen a decline in consumption since 1970.
Foods specific to one region are gaining popularity in areas where they don’t traditionally grow. Quinoa, a grain-like plant from the Andes Mountains of South America, is now popular worldwide.
While staple foods are nutritious, they alone cannot provide a complete range of nutrients. To avoid malnutrition, it’s essential to incorporate other foods into the diet.
Spotlight on Key Staple Foods
Rice
Rice is a staple for over 3.5 billion people, particularly in Asia, Latin America, and parts of Africa. Cultivated in Asia for thousands of years, rice was likely first domesticated in India or Southeast Asia. It reached Japan about 3,000 years ago and was likely introduced to South America by the Portuguese in the 16th century.
Today, the largest rice producers are China, India, and Indonesia. Outside of Asia, Brazil leads in rice production. Rice thrives in warm, wet climates and waterlogged soil, such as the flood plains of Asian rivers like the Ganges and the Mekong.
Corn (Maize)
Native to Central America, corn was domesticated by the Aztecs and Mayans. It remains the most widely grown crop in the Americas today. The United States is the world’s largest corn grower, producing over 40% of the world’s corn. China, Brazil, Mexico, and Argentina also produce significant amounts of corn.
Corn is versatile and can be stored relatively easily, making it a popular staple. Dried, ground corn is called cornmeal, used in many cultures to make porridge, including polenta in Italy and sadza in Zimbabwe. Cornmeal is also used to make cornbread or treated with limewater to make masa, the main ingredient in tortillas.
Wheat
First domesticated in the Middle East, in the area known as the Cradle of Civilization near present-day Iraq, wheat was key to the development of agriculture. Wheat grows well in temperate climates, even those with a short growing season. Today, the largest wheat producers include China, India, the United States, Russia, and France.
Most bread is made with wheat flour, which is also used in pasta, pastries, crackers, breakfast cereals, and noodles. Wheat can be crushed into bulgur, a highly nutritious food often used in soups and pastries in the Middle East.
Roots and Tubers
Roots and tubers are common food staples, particularly in tropical regions. Yams are important in the rainforests of West Africa, often peeled, boiled, and pounded into a pulp to make a dough called fufu.
Cassava, alsoknown as manioc, is a staple for over 500 million people. Originating in the Amazon rainforest of South America, cassava was introduced into West Africa in the 16th century and is now crucial to the diets of many people in Latin America and Africa.
Taro is a staple on some Pacific islands, such as Hawai’i, Fiji, and New Caledonia, and also in West Africa. The Hawaiian national dish, poi, is a thick paste made from boiled, mashed, and fermented taro.
Potatoes, native to the cold climate of the Andes Mountains, were the staple of the Inca Empire in the 15th and 16th centuries. Introduced to Europe by explorers of the 16th century, potatoes are now a staple in Europe and parts of the Americas. The leading potato producers are China, Russia, India, the United States, and Ukraine.
Beyond Grains and Tubers: Other Food Staples
While cereal grains and tubers make up the majority of the world’s food staples, they are not the only dominant foods. The Maasai of Kenya and Tanzania traditionally relied on cattle for their diet. Milk, meat, and blood are traditional ingredients in Maasai diets. Today, grain has become a staple for the Maasai, but they still consume large quantities of milk.
In polar climates, where fresh fruits and vegetables are scarce, indigenous cultures rely on meat and fish as staples. For example, Eskimo tribes of Alaska and northern Canada traditionally ate seal, walrus, and whale meat, in addition to many kinds of fish.
In tropical climates, people often rely on starchy fruits such as plantains and breadfruit. In parts of Africa and Asia, especially India, legumes such as beans, lentils, and chickpeas are staple foods.
Conclusion
Staple foods, while forming the backbone of a diet, need to be complemented with other foods to provide a balanced range of nutrients. The choice of staple food is influenced by regional availability, but globalization and advancements in agriculture and transportation have led to a wider distribution of these foods. Understanding the regional influences on staple foods can provide insights into the dietary patterns and nutritional health of different populations.