Abstract: The invention relates to a gluten-free composition that acts as an agent for blocking interfibrillar spaces in meat tissue and to a method for forming a ‘cover’ which, during cooking, provides an increase in the vapour pressure inside the fillet or piece of meat and, consequently, in the temperature inside same, thereby reducing both cooking time and meat juice loss, which increases the mass yield, juiciness and flavour characteristic of meat at the end of the cooking process. In addition, the invention relates to methods for treating meat with said composition prior to cooking.