Sufficient fresh post-rigor pork meat (16 kg per trial), fromdifferent
animals (mixture of muscles bíceps femoris, semimembranosus,
semitendinosus, gracilis and adductor) and pork backfat (1.5 kg per
trial) were purchased from a local market. The meat was trimmed of
visible fat and connective tissue. Pork meat was cut in squares of 5 ×
5 cm approximately and backfat was passed through a grinder with a
6 mm plate (Mainca, Granollers, Spain). Lots of ~500 g were vacuum
packed, frozen and stored at −20 °C until used (less than 2 weeks).