For added flair, put the red pepper flakes in the vodka a few minutes before starting to pull more zest out of the pepper flakes.
Add 1 cup of water, the beans and the kale, season with salt and bring to a simmer. Might take a bit of gentle folding to encourage that kale to get in there and shrink a bit. Reduce heat to maintain a simmer, cover, and cook until the liquid is flavorful and the kale is tender, 7 to 10 minutes.
You can serve this by itself, on pasta or rice, or with a side of crusty bread! Delish.