If you get them backwards and do three parts vinegar to one part oil, your puckered mouth will ensure you don't make that mistake a second time!
I had a bit of extra Olallieberry-Orange Jam that didn't fit into my jars, so I decided to make a salad dressing with it...
2 T olallieberry jam
1 part pinot grigio vinegar
3 parts olive oil
freshly ground sea salt
freshly ground pepper
2 T fresh oregano, torn into pieces
I put that all into a mason jar and shook, shook, shook, and shook some more to make a temporary emulsion. You'll see this tonight on an olallieberry-topped salad.