I worked at a small fast food chain in the boondocks of Oklahoma the summer after my 17th birthday. One of my jobs before getting moved up to drive thru cashier was making the refried beans. We would actually use fresh beans, sort them, boil them in a pressure cooker, drain them, dump the cooked beans into a large plastic tub and then refrigerate them overnight. Next morning, we'd dump them in large cast iron pots with a shit-ton of lard and mash that shit up good. They were absolutely delcious served in a paper cup with a little taco meat, shredded processed cheese and knock off Taco Bell hot sauce. It was 1980, dry and hot as shit (check the climate records; one of the hottest on record for the time). Nothing better taking a break when your hungover from drinking too many quarts of 3.2 Coors Light at the lake the night before than a cup full of that while sitting in the walk in freezer during your mid-afternoon break.