我無法相信這不是牛油! (英語:I Can't Believe It's Not Butter! ),是聯合利華 所生產的黄油 代替品[ 2] [ 3] [ 4] 。
產品由位於美國 馬利蘭州 巴爾的摩 的J.H.菲爾貝特公司 於1979年研製[ 5] ,為黄油的廉價代替品;產品的名稱則來自公司秘書的丈夫在試食後的一句評語[ 1] [ 5] 。J.H.菲爾貝特公司於1986年被聯合利華收購。產品原本只有在巴爾的摩和華盛頓 出售,收購後聯合利華於1988年將之推銷至全美國;1991年開始在英國 、加拿大 及墨西哥 有售[ 6] [ 7] [ 8] [ 9] 。
^ 1.0 1.1 Lazarus, George (June 1, 1981). "Filbert can't believe you won't like its new butter blend" [失效連結 ] . Chicago Tribune . ("Filbert has moved into the Syracuse, Albany, and Pittsburgh markets with a one-pound blend called "I Can't Believe It's Not Butter."")
^ Calvani, Terry. Antiturst Law Journal , 1989, "Advertising Regulation: The States v. FTC. "...a nationally distributed butter substitute, 'I Can't Believe It's Not Butter.'")
^ Cerklewski, F.L. Journal of Food Composition and Analysis , 2005, "Calcium fortification of food can add unneeded dietary phosphorus". "...and butter substitute (I Can't Believe It's Not Butter..."
^ Brands for life . Unilever.com. [April 30, 2012] . (原始内容存档 于2021-03-19).
^ 5.0 5.1 Unilever Corporate History . Unilever.com. [March 27, 2014] . (原始内容 存档于2014年4月2日).
^ Wyman, Carolyn (2004). Better Than Homemade: Amazing Foods That Changed The Way We Eat (页面存档备份 ,存于互联网档案馆 ) . Quirk Books. pp.50-52. ISBN 1931686424
^ I can't believe it's not Butter! . United Kingdom: Unilever.co.uk. [April 30, 2012] . (原始内容 存档于2012年5月13日).
^ I Can't Believe It's Not Butter . Canada: Unilever.ca. [April 30, 2012] . (原始内容 存档于2014年4月2日).
^ Jones, Geoffrey (2005). Renewing Unilever: Transformation and Tradition (页面存档备份 ,存于互联网档案馆 ). Oxford University Press. pp. 102-03. ISBN 0199269432