Asian herb ID
Can anyone identify this herb (see attached pic - sorry for the poor quality)? I bought it from a Cambodian guy at the market. He said the Khmer name is "biman" (or something similar), but I can't find any info under any name like that on the net. He also said it's chopped and added to pickles.
Anyone have an idea? I was going to post this in the Asian gardening section, but this one seems much more frequented.