jam

I read a review in the paper, of popular restaurants in the area. One of the restaurants were talking up their Wagyu burger with bacon jam. But they wanted $20 for it. No Way am I paying 20 bucks for a burger. A few weeks later my wife found some "Spicy Chili Bacon Jam" at the grocery store...

I've got a new Kubota MX5400. The top link on the 3-point hitch has a jam nut to keep it from losing adjustment. Does the jam nut just need to be hand-tight, or should more torque be used such as tightening with a wrench?