rice wine vinegar
pinch of salt
That's it. They had a bowl of rice wine vinegar (2 cups?) w/ what i would guess was 2T? of sugar and a pinch of salt in it. Then we had a huge platter of sliced cucumbers. We took one with some chopsticks and dipped it in the vinegar and ate it. It was fantastic! I could have eaten them all night. They said they had them at a Vietnamese place and asked what the sauce was. Easy!