Jam - Only done it once with some we got in a hamper, lush is an understatement. Full of sugar though, cant stand jam on bread unless alot is thrown on.
Peanut butter
Butter but only if its on the knife after buttering some toast. Tastier then i expected.
With all of these I don't drink them or eat huge quantities, but will, for example, put a dollop of ketchup on a plate and scoop little bits up with my fingers