Groff authored six cookbooks focusing on Pennsylvania Dutch foods, including Good Earth and Country Cooking, which Time magazine called "one of the top five regional cookbooks introduced in 1981.
"[1] In 2015, The Patriot-News further praised her contributions to regional food traditions, writing "Groff was to Pennsylvania Dutch food what the late chef Paul Prudhomme was to Cajun cooking.
"[1] Groff was born in Strasburg, Pennsylvania, to Clarence N. and Bertha K. Root Herr.
[2] She was a 10th generation Pennsylvania Mennonite and a direct descendant of Hans Herr.
[2] In November 2014, The New York Times selected Groff's recipe for glazed bacon to represent Pennsylvania in a survey of Thanksgiving foods from all 50 U.S.