Abstract: A mixture and process for tempering feed grain by adding a natural surfactant in the form of a extract of the yucca plant to the grain. The yucca extract contains generally 10 to 11 percent sarsasaponin by weight which is diluted with water and sprayed on grain just prior to processing in rollers for flaking to increase water intake and gelatinization and may also contains small amounts of copper sulfate and sodium benzoate as perservatives. The mixture also contains a penetration agent, or surfactant, consisting of a compound known by the generic name of Oxirane and Nonylphenoxypoly (Ethyleneoxy) Ethanol at approximately a 10% volume/volume rate basis. A freeze resistant ingredient such as calcium chloride can also be added to improve resistance to cold temperatures for use in climates that encounter temperatures below 0.degree. Fahrenheit.