The choicest cuts of meat come from parts of the steer that don't move much, such as t-bone steak from the steer's back. But lesser cuts can be tenderised with an easy marinade. Simply place meat in a Ziploc bag, add a cup of cheap red wine, toss in your favourite seasonings, squeeze out the air and place flat in the fridge for 12 to 24 hours, turning occasionally.