Cut open a cow and take out the meat. Then you make hamburgers with said meat. Then you eat the hamburgers in front of your victim after starving them for a whole day. Then tie the victim and put them into he cow ( leave the cow to rot a bit before you put them inside) and sew the cow back up. Leave the person to rot inside the already rotting cow.
You would not use the cow above for this tactic.
(Use an ugly cow)