If melted cocoa butter is simply allowed to cool naturally, a mixture of forms I-V will be obtained. Obviously, this isn’t ideal, as forms I-IV have less than desirable properties that impact on the quality of the chocolate. Tempering involves allowing the melted chocolate to cool very slowly, as this increases the amount of form V that is formed in the mixture. Once cooled, the chocolate can then be heated again to just below the melting point of form V – this melts forms I-IV, which all have lower melting points, but not the form V crystals. When the chocolate is again allowed to cool, it solidifies following the pattern of the existing form V crystals, and adopts a similar structure, with the end result being chocolate that has very little of the other forms of structure present.