Kayserispor posted a 6-1 heavy home win over Pazarspor in the fourth round of the competition at the Kadir Has a good Stadium.
The 24-year-old got his name on the score sheet for the Red and Yellow lads with a brilliant strike on the 60th minute.
He assisted the first goal scored by Black Stars captain Asamoah Gyan on the 14th minute of the match.
Other goals were scored by Mert Ozyildirim, Bilal Basacikoglu, Silvestre Varela and a brace from Oleksandr Kucher completed their home victory.
He lasted for 74 minutes whiles Asamoah Gyan also played 75 minutes.
Mensah has scored twice in his 11 caps for Kayserispor in his debut season since joining them on a season-long loan from Atletico Madrid.