Removing wine labels from bottles

I’m trying to keep the labels for use in a wine tasting book I have.

But the technique I used on stamps on envelopes as a kid (immersion in water) doesn’t seem to work at all. The glue under the label is resistant to water, and all it does is stain the label.

Any ideas?

Here’s a whole bunch of ideas.

You know, to excuse myself from the perception of laziness, I thought this would be such an odd thing to do that it wouldn’t show up on a Google search, but your link has websites dedicated to the practice. Thanks.