The Other Miss Pickering and I are like chalk and cheese. She is beautiful, athletic, skinny, effortlessly chic and organised. I am not.
Whilst The Mother Hen and I are all about food, my sister has always seen food merely as fuel to exercise.
But something has changed, her oven has actually been used, she has started making cakes, and tarts, and owns baking beans, and silicone bakeware.
The transformation is little unnerving, but as she produces such delights as these Oreo brownies, from the lovely Lorraine Pascal, I am keeping my nerves to myself.