Buy a pack of ingredients at Charlesworth's for making Panforte. This is not a packet cake but rather just the dried fruit part - all weighed already, plus the recipe.
Follow all the instructions carefully - you will have to add flour, butter etc -and you will have a perfect and especially delicious cake that will last for months - until you start eating it, then it will go in a flash.
I cut slices and put them in cellophane bags and attach a little gift card. When visitors drop in around Christmas time, you can quickly write their name in the card and it seems like you had remembered them all along!!