Question:
Hi rabbi
A gute vouch
I have a question if I ate a kazyis but I’m not sure if it was כדי אכילת פרס do I have do say birkas Hamzan??
Thanks very much
Kol tuv
Answer:
Since you are in doubt you should not recite the birkaas hamazon.
Sources:
O:CH 210 Mishnah Berurah 1, Igros Moshe 1:76