Bring a large pot of water to boil, season with salt. Add spinach and cook until just wilted, about 30 seconds. Drain immediately in colander and plunge into ice water.
Let spinach cool completely for about 30 seconds, tossing it around with tongs, and then drain it again. Using your hands, squeeze excess water out of spinach. When you think you are done squeezing, do it one more time. Spinach is absorbent stuff!
Put your spinach in a mixing bowl and set it aside while you make the dressing.
Whisk together the sesame oil, soy sauce and rice vinegar. (I do this while the water is boiling).
Add the dressing and sesame seeds to the spinach and toss it until everything is nicely combined.
Notes
Spinach: We like baby spinach for this recipe, but you can also use regular large leaf spinach…just chop it into bite-sized pieces before you cook it. And if it isn’t pre-washed, give it a good rinse to get any sandy dirt out.
Sesame Oil: This super flavorful oil is usually in the international aisle of your supermarket.
Rice Vinegar: This slightly sweet vinegar is also either in the international aisle, or with the other vinegars. You can also use white wine vinegar.
Sesame Seeds: Look for these flavorful little seeds in the spice aisle.