Whats the best way to clean cork grips?

I know Jerry, I know. I was trying to get onboard with the whole cleaning theme.

LOL!!!!

Actually, I remember the saddest (and happiest) day with rods. My Uncle gave my my Grandpas old cane rod with old skeleton framed pflueger. Still has an odd looking flyline on it. Well, my uncle (not being a fisherman) said the grip was grimy, so he sanded it down. UGH!!! Had a beautiful layer over that cork. Remember it fondly. Looks nice and clean now, but would've rather had the grimy cork.

Funny! The last guy I saw "fishing" with plastic over his cork I was a bit suspicious. That suspicion was realized later as I watched him pull out his citation book and issue about a dozen tickets in a single hole to a bunch of gear guys that he cited for snagging, illegal rigs and fishing without licenses (not all the same of course). When he passed by my friend and I swinging flies above that hole I chatted with him briefly. He checked my license, hooked his shirt with my barb crimped fly and told me he wished there would be more fly anglers around. I asked for his card and he handed one over. He was a NOAA enforcement officer if I remember correctly. The hole below us cleared out pretty fast!

I told him that the cork covered in plastic blew his otherwise perfect disguise. He also showed me his hook, which was clipped off on his corkie and yarn rig. He said he planned to return the rod and did not want to get it dirty. I told him I planned on keeping mine and hoped to get it really dirty.