'In Britain, we treat each other with a lingering sense of suspicion, and if someone tries to talk to one of us, we normally take it to mean they are either insane or want something'. Absolutely true for where you hail from and absolutely false for the North and Scotland. Don't tar us all with...
There's really no need to peel a mango if you're dicing it. Cut thick slices either side of the stone and use the 'hedgehog' method. (Google 'how to prepare a mango'). P.S. Your dumplings look terrific !

