When Pepper was rejected as a candidate for the market research training program at the now defunct J.Walter Thompson ad agency in Chicago, she resigned and opened her own market research firm, The Hunter-Miller Group, Inc. in 1995. Since then she has been helping large corporations like General Mills, PepsiCo, Procter & Gamble and The Chicago Symphony Orchestra, understand Black America.
In 2005, Pepper along with the late Herb Kemp, co-authored What's Black About It? considered by many to be one of the most important books on African-American cultural marketing and insights. In her book, Black (Still) Matters in Marketing (April, 2012) Pepper helps marketers better understand the importance of making a real and meaningful connection with today's black consumer.