Private Preserve - funny taste?

[hotwine]

I'll have to side with LB and Foodie. PP is not my choice of preservative.... seems to impart a metalic taste to my ol' buds. Bought a can when we dicussed this 2-3 years ago, used it twice with same results. Same can is still in the cupboard, unused since. Keep forgetting to include it with the bad wines that periodically get stacked up for target practice.