Although methanol is not produced in toxic amounts by fermentation of sugars from grain starches, contamination is still possible by unscrupulous distillers using cheap methanol to increase the apparent strength of the product. Moonshine can be made both more palatable and perhaps less dangerous by discarding the "foreshot" – the first few ounces of alcohol that drip from the condenser. Because methanol vaporizes at a lower temperature than ethanol it is commonly believed that the foreshot contains most of the methanol, if any, from the mash. However, research shows this is not the case, and methanol is present until the very end of the distillation run. Despite this, distillers will usually collect the foreshots until the temperature of the still reaches . Additionally, the head that comes immediately after the foreshot typically contains small amounts of other undesirable compounds, such as acetone and various aldehydes. Fusel alcohols are other undesirable byproducts of fermentation that are contained in the "aftershot", and are also typically discarded.