Pete, they are seed pods, you have to carefully peel them first, each seed is surrounded with some pulp around it, you just mush it in your mouth and swallow, don't chew the seeds, they are tough. They come in Green, yellow, orange and Purple colors. sweetness varies according to color. I think the sweets I have tasted are orange ones so far, and the purples are the most aromatic.
I think, if you search the YouTube under my screen name (Aaron4USA) you may find a short vid how to peel and eat them... It's an awful take. LOL