Mangosteens in the Snow

I seem to be in Canada, or somewhere of that sort, so I will have to promise to add photos as soon as I can (ETA: here they are!), but I just cannot wait to tell you about the mangosteens I have been eating every day since I found them. These exquisitely juicy little segmented globes are no relation to the mango, or to anything else I've ever seen. They look at first very like globe eggplants. The woody outer shell is about half an inch thick. Inside are about ten succulent segments of fruit. They look a bit like lychee, white and translucent, but the flavor is like lime with a little banana and a little floral. Getting them open is the tricky part, because it takes great force to cut through the shell, but ideally, you don't want to scratch or crush the lush little sections inside. Someone must have invented the ideal single-purpose gadget for this; has anyone seen it?
It is funny to be encountering all this tropical lushness under forty "centimetres" of snow, eh?
The Yiddish word for mangosteen (Garcinia mangostana) is מאנגוסטאַן (mangustan).
The word in Mandarin Chinese is Dàoniănzi (inverted wick? maybe because that is what the stem looks like?)
I'll eat my hat if Sweetnicks has seen one of these!