Aharon Pfeuffer was a Rabbi

Rabbi

In Judaism, a rabbi is a teacher of Torah. This title derives from the Hebrew word רבי , meaning "My Master" , which is the way a student would address a master of Torah...

 and Posek

Posek

Posek is the term in Jewish law for "decider"—a legal scholar who decides the Halakha in cases of law where previous authorities are inconclusive or in those situations where no halakhic precedent exists....

 and a recognised authority http://books.google.co.za/books?id=hpCkOtmDHSkC&pg=PT1&lpg=PT1&dq=aharon+pfeuffer&source=bl&ots=X7AlrgZc8S&sig=p6x6CljrrCKSUUD7-971k56pm8Y&hl=en&ei=AE5kSpXLFNLHlAeWxMn9BQ&sa=X&oi=book_result&ct=result&resnum=6 on Kashrut

Kashrut

Kashrut is the set of Jewish dietary laws. Food in accord with halakha is termed kosher in English, from the Ashkenazi pronunciation of the Hebrew term kashér , meaning "fit" Kashrut (also kashruth or kashrus) is the set of Jewish dietary laws. Food in accord with halakha (Jewish law) is termed...

. He was active in Johannesburg

Johannesburg

Johannesburg also known as Jozi, Jo'burg or Egoli, is the largest city in South Africa, by population. Johannesburg is the provincial capital of Gauteng, the wealthiest province in South Africa, having the largest economy of any metropolitan region in Sub-Saharan Africa...

 and Bnei Brak. He founded the Yeshiva Maharsha Beis Aharon

Yeshiva Maharsha Beis Aharon

Yeshiva Maharsha Beis Aharon is a Haredi Community and Yeshiva based in Fairmount, Johannesburg. The community was founded in 1982 by the late Rabbi Aharon Pfeuffer , and is Headed by Rabbi M. Raff. The Yeshiva comprises a Beit Midrash, a post high school programme, and a semicha programme...

  in 1982 (later named for him) and headed the Yeshiva College of South Africa

Yeshiva College of South Africa

The Yeshiva College of South Africa , commonly known as Yeshiva College and formerly known as Yeshivat Bnei Akiva. It has around 900 pupils, between the ages of 3 and 18...

 in the early 1980s http://www.ajcarchives.org/AJC_DATA/Files/1982_12_SouthAfrica.pdf. He is best known as author of the work on Kashrut Kitzur Halachot Basar B'Chalav ("A summary of the laws of Milk and Meat", קיצור הלכות בשר בחלב - also called Kitzur Shulchan Aruch al Hilchos Basar be-Chalav). He died in a car accident on his way to the Kruger National Park

Kruger National Park

Kruger National Park is one of the largest game reserves in Africa. It covers and extends from north to south and from east to west.To the west and south of the Kruger National Park are the two South African provinces of Limpopo and Mpumalanga. In the north is Zimbabwe, and to the east is...

http://www.jewishgen.org/Safrica/rabbis&cantors/names-a2z.htm.