1.   Her heart is about the size of a red plum.

2.   It also works with sweet red plums or apricots.

3.   Some red plums, like the Simca, are tart and salmon-colored inside, while others, like the big Fortunes are winey tasting and golden inside.

4.   With red plums, or for that matter any plums at all, the number you need depends on their size.