Zucchini's tender skin doesn't need to be peeled. Peeling it might actually strip away some of its nutrition and fibre. Plus, it's too delicate for any kind of scrubbing. Just give it a quick rinse. If you're worried about pesticides from store-bought zucchini, you can wash it in a vinegar solution for extra peace of mind. To make up a vinegar solution for washing veggies, use one part vinegar to three parts water, drop them in for 5-10 minutes, then take them out, rinse and pat dry.