It must go by some other name, because there is absolutely nothing about it in any of my Asian veggie books, nor via any of the internet search engines. Where did you buy it from & does it have a scientific name?

It is usually spelt Chaplu or chaploo and is Piper sarmentosum. Sometimes wrongly identified as Piper betle, which doesn't have glossy and tender leaves.

Rose-Marie

Here is a link that might be useful: Chaplu

Here's a Thai Food Company site that has some pics & info on using the plant you bought. They also sell fresh bunches of it for cooking.

Here is a link that might be useful: Thai Food Info Site

Thanks for all of the information. I bought it from Tropical Trees. I would give you his link but I do not know how to do that. I'm sure anyone could google it easily. Jerry