Okay, so I really want a tuna sandwich (and there's no other food in the house) but every single recipe that came up wasn't just a plain tuna sandwich. All I need to know is how much mayo I add to the tuna. I got 10 pages of results here and this one makes no mention of mayo at all. Can anyone here just tell me how much mayo they add to a can of tuna for a good-tasting sandwich?