As of November 2015, some online retailers that carry Superior Products Butternut Flavoring are Betty's Country Grocery, Pittsburgh Spice Company, Piedmont Farm and Garden Supply Company, and Cake and Wedding Cottage. All retailers offer the flavoring in 8-ounce plastic bottles.
Though commonly referred to as butternut flavoring, the product is actually a combination of butter, nut and vanilla flavors. Each bottle has a creation, rather than expiration, date on it.
At Betty's Country Grocery website, Superior's butternut flavoring receives a five-star rating from the editor, and the Pittsburgh Spice Company page offers positive user reviews of the product. Piedmont's site states that fishermen also use the extract to flavor bait.