Here’s a secret no one mentions: double-dipping with a dirty spoon is what really kills your vinaigrette. If you dip a fork that just touched salad greens (which have bacteria from the fridge air) into your vinaigrette jar, you’re inviting trouble.
Always pour out what you need into a small bowl, and never, ever put leftovers from that bowl back into the main jar. It’s like reverse sharing—you don’t want to mix the already-licked cookie back into the dough.
Treat your vinaigrette jar like a pristine kingdom. Only clean, dry spoons allowed. Your dressing will last longer, and your tummy will be happier.