In 1967, Erwin attended the prestigious Culinary Institute of America at Yale University in New Haven, Connecticut in order to expand his knowledge of the culinary world. His education also included business courses at the University of Dayton.

While at Kennedy Union, Erwin was convinced to start up his own catering business. In 1968, Kohler's Food Service was established. The history of the company includes a barbeque service in 1971 followed by the catering operations at the Dayton Convention Center from 1972-1986. Kohler's also served as the prime caterer for the Dayton Air and Trade Show from 1983 to 1994 and 1996 to 2001. In 2001, Kohler's became the sole concession for the Exposition Center at the Dayton International Airport.

In addition to operating his business, Erwin is dedicated to the Miami Valley Restaurant Association. He has served as the president of the association and currently is on its board of directors. He is also active in the Ohio Restaurant Association Board. Erwin's knowledge and expertise in the food service industry is definitely an asset to these organizations and the work they provide.
Erwin Kohler's growth and success is shared with Judy, his wife of 40 years, and his two children. Judy plays an integral role in the business by bringing different aspects of creativity to the table. Erwin's son Craig serves as Vice President of Kohler Foods, and has worked for the company for over 25 years.He is also a graduate of the Culinary Institute of America and is an outstanding chef and General Manager. Erwin's daughter Beth holds a degree in hotel management.