Christmas queen Mary Berry's aubergine five-nut roast, from her Christmas Collection, is, as the name suggests, rather more focused on the nut side of things. Breadcrumbs play second fiddle to a medley of almonds, Brazils, chestnuts, pine nuts and pistachios which, although tangy with lemon juice and garlic, is outrageously dense. A single slice of this could leave you supine in front of the Queen's speech without even the wherewithal to reach for the remote control.