In a medium bowl, add mayo, vinegar, sugar and a pinch of salt. Mix together well, then add shredded cabbage and mix to coat. Place in fridge until dinner is ready,
Cut peel off of baked russet potatoes. Over a large bowl, shred potatoes with a cheese grater.
In a large wide pan, over medium high heat, add 1 T of canola oil. When the pan is hot, crumble the raw ground beef and add it to the pan. Let it brown without disturbing it, about 3 minutes, then stir to complete browning. Season with kosher salt and black pepper.
In a large wide pan, over medium heat, melt 2T Margarine. Add onion, cook until onions tenderize, about 3 minutes. Move to one side of the pan.