14 Anonymous In: Question-Answer What is the “fluff” in the Massachusetts fluffernutter sandwich? 14 What is the “fluff” in the Massachusetts fluffernutter sandwich? Marshmallow Peanut butter Banana Mayonnaise 1 Answer Voted Oldest Recent Random Best Answer Goto 2021-06-28T18:00:06+00:00Added an answer on June 28, 2021 at 6:00 pm The correct answer is: Marshmallow. 19 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.