About this recipe: I picked 4kg of blackberries the other day from the Walthamstow marshes in London (so much more than back in the country!) and made two batches of jam with 2kg (with and without apples, and froze the rest) this was the best. It has a bit of a Christmasy taste because of the cinnamon and nutmeg. Here's my recipe - finite measurements are for squares :-)
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Excellent! Made it last year too and it was brilliant. Helpful hint: use a spatter screen (the sort you use to keep the cooker clean when frying) when you are boiling it down to avoid getting hot jam spat all over you. - 23 Oct 2012
have just made jam with this excellent recipe, have not made jam for ages! i did adapt it slightly to suit my own tastes (added some lemon rind and juice, slightly less sugar). Kitchen a bombsite but will definately make this again - yum! - 07 Sep 2011
The jam set perfectly. was a very sweet jam so will use more apple next time. but none left so everyone loved it - 21 Mar 2011