I do have perilla seed here ... but mine is in a seed packet I plan to plant come spring. Maybe I should taste some....
You have to run them through warm/cold cycles (warm room temp/freezer) or scarify them, otherwise it can be difficult to get them to sprout. It also has to be pretty warm and/or in full Sun for a decent portion of the day. They can also take FOREVER to sprout. It took almost 30 days the first time I planted them. I was about to give up and had contacted seller as they guaranteed they would grow, then later that day little green sprouts started popping up.