I tried to open a bottle yesterday, but when I pulled on the stopper, the plastic top broke off of the cork. What's left of it still in the neck of the bottle shouldn't be hart to remove with a cork screw, but I'm wondering what people think is the best thing to replace it with. Are plastic or rubber stoppers alright? Will they affect the whisky at all? Replacement corks have sloped sides... I'd be conserned about them not creating an effective seal.
Thoughts?

