For best results, use dry sea scallops. Patting them dry before searing is crucial for achieving a beautiful crust. Be careful not to overcook the scallops, as they can become rubbery. They are done when they are opaque and slightly firm to the touch. Feel free to add other citrus fruits to the salad, such as orange segments or blood orange. If you don't have rice vinegar, white wine vinegar or apple cider vinegar can be substituted. The shallot vinaigrette can be made ahead of time and stored in the refrigerator for up to 3 days.