Commercial ginger ale commonly contains carbonated water, sugar or high-fructose corn syrup, and artificial or natural ginger-flavour. Ginger content is often listed on labels in a general "natural aroma" or "natural flavoring" statement, to preserve secrecy of the complex proprietary mix of spices, fruits and other flavours used; lemon, lime, and cane sugar are the most common ingredients. Pineapple and honey are also occasionally used.