How to Make It
In a small bowl, whisk the olive oil with the lemon and orange juices, the vinegar and the orange and lime zests. Season lightly with sea salt and black pepper.
In a large bowl, toss the spinach, basil and plums. Add the dressing and toss well. Sprinkle with sea salt and black pepper (so there are flakes clinging to the leaves) and serve right away.