Common causes include foods such as peanuts, tree nuts, sesame, fish, shellfish, dairy products and eggs.

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It also introduced a grading system for food meat, eggs, dairy products, and fresh fruits and vegetables to flag and discourage substandard quality.

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Economically, artificially-created fuel demand for corn, soybean oil, grease, and other inputs drives up the input prices for food and consumer products such like french fries, soaps, detergents, hair conditioners, eggs, dairy, and sweeteners.

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Restrictions apply to products made from meat, dairy, fish, eggs and honey as well as some fruit, vegetables and plants.

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The British company's products include Dairy Milk, Creme Eggs, Dentyne chewing gum and Halls cough drops.

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Head to an American supermarket however, and eggs are always held in refrigerated units, like milk and cheese and other dairy products.

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