Feeling quite smug today as I’ve actually done the sensible thing for a change, and snapped up Delia’s christmas cake kit early from Waitrose, before its nationwide sell-out. In fact, my smugness levels are at risk of reaching previously unknown heights, as TL actually made the cake yesterday with his little ones. My goodness, Delia is good. If you can produce a perfect Christmas cake with a four year old, a six year old and a 40-something-year-old with limited previous…