The method I've used that seems to work pretty good and I believe Yooper also talked about something similar in other threads is I take a glass bowl and put a cup of boiling water and a crushed campden tablet in it, then I set another high side but smaller diamater bowl inside of that, place the corks in a single layer as best as I can around the inside of the dry bowl then plastioce wrap the top of the whole thing, it creates a nice steam bath for the corks then after 10-15 minutes I take it all apart and the corks hang out in the bowl til I use them.