Used a little furniture polish. Wow...slick now!
I did notice my growler/lamp was putting these tinny dents in the top. You couldn't really seem them, but could feel them. The grower has a ring of ridges along the bottom that are fairly sharp. I removed the lamp and after about two day the dents were gone. So I used double sided tape and attached a coaster to the bottom of the growler. That seems to work fine.
Tho I'm not totally happy with the growler. It is fat and low. I'm thinking of going wine bottle. Or even a beer bomber.