Ottolenghi's winter spiced cheesecake with marmalade glaze Recipe

In The Guardian recently, I spied an interesting sounding recipe for Winter Spiced Cheesecake with Marmalade Glaze by Yotam Ottolenghi.  The cheesecake was interesting because it contains sweet potato; yep, you read it correctly, sweet Being a sucker for anything a little unusual, of course I tried As you can see, these cheesecake is a glorious orange colour, and the base has a wonderful earthiness about it from the toasted almonds and sesame seeds.  Don't skip the marmalade glaze - the filling of the cheesecake is not overly sweet, so the glaze gives the cheesecake a delightful sweet To make this cheesecake, you will 550g sweet potatoes cut in half lengthways60g hard amaretti biscuits (I used morning coffee…