Oh, don't regret! It's a wonderful and very healthy fruit! You got lucky, because it's hard to find where I live. I get it sometimes in an ethnic store. It taste sweet/tangy, but you can prepare it in many different ways.
Start with easy:
cut the fruit in half, dig out the flesh, remove seeds, cut in chunks, season with ... BBQ seasoning, and saute in a frying pan for 20 min. Add BBQ sauce and simmer 10 more minutes.
Serve on a bun like pulled pork. With guacamole/avocado, and/or coleslaw.
https://goo.gl/K12P6m
It taste amazing that way!
Or make a taco with it! (same preparation)
https://goo.gl/tKRT3N
Great for vegetarians
BTW: don't discard the seeds!!! They have lots of nutrition!!
You can boil them:
put in a pot, cover with water, boil for 30 min (check with a fork if soft like potato), drain, let them dry a little, then peel off the "plastic like" skin and eat!
Or you can roast:
http://food.onehowto.com/recipe/how-...eeds-3661.html
Enjoy!!