Ask the ExpertsSubscriber OnlyVitamins & Supplements Q. Why dont I see vitamin A on my package of ready-to-steam frozen sweet potatoes? June 5, 2019 0 Facebook Twitter Google+ Pinterest WhatsApp Q. Why dont I see vitamin A on my package of ready-to-steam frozen sweet potatoes? To continue reading this article you must be a paid subscriber Subscribe Subscribe to Tufts Health & Nutrition Get the next year of Tufts Health & Nutrition for as little as $18. And access all of our back issues and online content free of charge. Subscribe today and save 36% off the regular rate! Already Subscribed? Click Here to Sign In | Forgot your password?