Ooo i know this many times like this eated :) at first time it was strange why need do like this it will destroy taste but when you live in that coulture affter some time you start accept how it is and you starthing changing too. In europe and in america i newer saw like this only here in ph you can see that most filipino doing like this to increase taste and i think it is normal coz most here you get like apples in europe for free and you starting experiment see what be better for mango :)