If it comes away from the fruit easily, the pineapple is ripe: if the leaf smells of fermentation, it’s past its best. Super Sweet ... Pineapple juice or purée is also good in exotic fruit ...
After you decoratively top the caramel with pineapple slices ... the cake with tang and tenderness and because some of the pineapple juice makes its way into the cake, too, you are guaranteed ...