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You could make a shallow tray of cracknell, and when it is set, fracture it into pieces, like crasy paving. Take it with you in a bag, just before serving push a jagged piece at an angle into each pot. Not quite traditional, but still the same taste texture.
Or if the pots will stand it, melt some bitter dark chocolate and give a layer on each pot. A new twist to an old idea, and the creamy/bitter chocolate combination would work well I think.
Have a lovely evening, sounds like you have worked hard.
Nigella's nutella cheesecake. Been a hit every time and really easy! warning VERY rich, calorific and morish. Transport in springform tin, covered in foil with ice packs and serve straight from the fridge.