Solar baked Christmas cake

Last Saturday was predicted to be sunny and warm, so I woke up all keen and eager to make my (belated) Solar Christmas Cakes in the solar oven.  The weather in Cape Town has not been conducive to solar oven use apart from the one hot sunny day we had a week or so ago.  A windy, cloudy and sometimes wet Spring is lingering, and summer is still hovering in the sidelines.
But, on Saturday morning