In the name of Allah, at the beginning and the end. (If one forgets to say Bismi — Eating & Drinking
بِسْمِ اللَّهِ أَوَّلَهُ وَآخِرَهُ
Transliteration: Bismillaahi awwalahu wa aakhirah
Translation: In the name of Allah, at the beginning and the end. (If one forgets to say Bismillah at the start)
Reference: Abu Dawud, Tirmidhi