This is your jam, and while it won't last indefinitely on the shelf like other kinds of preserves, it'll last in the fridge for three to four weeks — long enough to allow you to eat it up.

I usually make these turnovers with homemade rough-puff pastry (also called blitz pastry) because it tastes better, but I won't blame you if you use commercial puff pastry. It's worth seeking out ...