In the east coast state of Kelantan it is pronounced as pelae. So, when someone offers you pelae in Kelantan and not knowing what in the world a pelae is, my advice is don't turn to your trusted English-Malay dictionary. You'll find "bananas" instead.
Still on mangoes, the next time you're in Jakarta, do try the mango juice. They're really thick and sweet (unlike the diluted version you'd normally get at "gerai makan Siam" in KL).