He gained prestige with his travel guides for Senegal, Gambia and Madeira, but most notably with his work about his home country Ghana, formerly only writing in English.
It has become a benchmark work in German-speaking regions and was tagged one of the best travel guides for an African country in a survey by the UNESCO committee.
In cooperation with former spokesman of the Frankfurt Book Fair, Holger Ehling, he worked on Westafrikanisch Kochen, a cookbook for West African food.
Cobbinah also supported his author colleague Barbi Lasar with his book about the South African Cape Region: Südafrika: Die Kapregion.
As a columnist and book reviewer Cobbinah is also part of the editorial staff of The African Courier, a journal published in English.