Salubrious is a fancy way to describe something that’s good for you or is generally favorable to mind or body, but it need not be limited to describing healthy foods or liquids.
We salute each other with the cheer, "To your health!" as we chug down something that probably isn’t that good for us. But if it were salubrious, it would be. The two words, salute and salubrious stem from the same salus, meaning "welfare, health.” Maybe next time, raise a glass of wheatgrass instead of vino!