Also, the husks and pits (what remains) of the quince are used to make a quince jelly, that we call "geleia de marmelo" (a liquid jelly):
https://translate.google.com/translate?sl=pt&tl=en&u=http%3A...
In English you have jam and jelly; in Portuguese we have compota which is jam made from fruit pulp, geleia which is liquid jelly with a consistency of jam usually made with the rest of the fruit like husks and/or pits (though the name is also used for other products like bee's royal jelly), and gelatina which is the solidified jelly.