Store any leftover sunomono in the refrigerator, in an airtight container, for up to 5 days. The salad will lose a bit of its crunchiness the longer it sits, even if you used the salt trick we just discussed. Don’t worry, though — more time in the refrigerator means more time to marinate in the insanely delicious dressing! Your taste buds will be so happy, you’ll barely miss the crunch.