Article 5
Meat purchased under this Regulation must be manufactured into processed products containing both beef and pork. Furthermore, proof must be provided to the satisfaction of the competent authority of the Member State in which processing takes place that the composition of the processed product concerned has been modified compared with the composition prior to the date of contract of sale leading to a reduction of the pork content of at least 10 percent and a corresponding increase of the beef content, such that the increased quantity of beef used is at least equivalent to the reduction in the quantity of pork used.