Method #3 is the part I was interested in. Read about having to rub the cutting boards with salt every night after the day's work was done in the butcher shop in
Cleaving: A Story of Marriage, Meat and Obsessionsby Julie Powell, the author of the previously fascinating Julie and Julia about cooking through Julia Child's cookbook. The more recent one is about her apprenticing as a butcher but in between rhapsodies about eating fresh liver, she goes on and on about her problems being married to a perfect man while lusting for another. It gets a tad tired, but overall, still learned a lot about meat. Like how to clean up after.