Manufactured by Wrigley, bite-sized Skittles were introduced in the United States in 1982. Skittles were sold in flavors such as lemon, lime and strawberry. Sour Skittles made their first appearance in the year 2000.
One of the main ingredients in Sour Skittles is citric acid. The candies are coated in citric acid powder, giving them a sour flavor and different appearance than their sweet counterparts.
Citric acid is an organic acid that is derived from citrus fruits such as lemons and limes. It is used as a food and drink flavoring, as a preservative and as an eco-friendly cleaning agent.
Since the emergence of Sour Skittles, new types of Skittles have been created. You can now purchase Fizzl'd Fruits, which are similar to Sour Skittles and have a special coating that fizzes in your mouth.