We can pick sour sop and sweet sop just before they fall off the tree and "nunuk" them until they ripen. I don't think this will work with breadfruit...they will just get "lamas" and rot. So...next time you get hold of a breadfruit try this...place in your vegi crisper in the refrigerator surrounded with ripe apples. The ethylene gas emitted by the apples may cause the fruit to ripen.
