On the one hand, I'd recommend RSO/FECO. It's a full spectrum product that is already decarbed in a format that makes it very easy to do dosage math. It typically comes in a glass syringe with portions marked on the side. It would allow you to make very reasonable new user doses without worrying about overwhelming new users. A good starter dose is 5~10mg for most people, so very low in the grand scheme of things to an experienced user.

On the other hand, if you have dispensary access, you could just ask for their best tasting 5mg or candy bar. A good budtender will know what's good in their dispensary. I could promise you tasty edibles from mine.