Betty BossiWonderbox keeps flexible cookie cutters for baking tasty parcels, pinwheels and pastry boats ready to hand – your universal kitchen aid for delicious snack pastries.

Good concept but the success rate isn't good enough. It doesn't always seal the pastry edges so that the filling seeps. My best success rate was 5/8ths = 62.5%, using bought puff pastry sheets which, with extra rolling out, produced 8 units per sheet, and putting on a miniscule mean amount of filling (FAR LESS filling than claimed/shown in the advert photos!). At that rate (a) it's not worth the effort (b) it's overpriced at 29quid95 (c) buying pastry is expensive.The Wonderbox is a glorified cookie cutter, with options for windmills, boats and parcels. I bought it because I wanted to make smaller daintier versions of the windmills and boats I do entirely by hand, but entirely by hand I get a 100% success rate.The lever is stiff, which is correct but feels wrong; and there are two stages of pulling (you feel each stage) and it clicks when it comes fully out. But even with the corners brushed with melted butter (i.e. edible glue), the best way to try and stop the pushed-together corners separating during baking is (1) put on a mean amount of filling i.e. less than looks right; and (2) squish the tops together more than the Wonderbox does but at the risk of damaging the crimped pattern. Even with (1) and (2) it's a matter of luck whether they open up during baking. If or when they split apart, no way is it possible to re-assemble them after baking. You'd think the "parcels" (all four corners raised) would be easiest but if they go wrong they look like the Millennium Dome but with only four of its support towers.The best jam for not seeping seems to be apricot. Red or dark berry jams almost without exception oozed out onto the baking pan. Successful pastries look (and taste) good with lines of drizzled vanilla glaze across the top. Ham and cheddar cheese boats came out better, because the cheese bubbles and spreads across the pastry which actually looks quite good and tastes nice; but again, you can only put on a miniscule amount of filling per boat otherwise the pastry corners might burst apart during baking and/or the cheese oozes out over the baking pan.The Wonderbox comes with instructions (see photo excerpts) and four recipes (not tried).I suppose renaming the Wonderbox to Woebox is harsh, but anyway I'm going back to making (larger) windmills and parcels entirely by hand.