I bought this one off ebay, it was called Katzengrass so must be German, and its all ready for you in the plastic tray, all you have to do is water it! I nearly managed to kill it off, as it gave no indications as to how much water they need (which is lots by the way!!), and it grew in about a week. Mine grew indoors, I kept in on the window ledge in our downstairs toilet, as its the only room Mr Max doesn't go in as the door stays shut lol!
It looks really good though, quite lush and obviously very tasty!
I'll check on ebay and see if I can post the link to what I bought, although it was a while ago