In January, I am ordinarily making lemon curd, lemonade, lemon bars, lemon salad dressing and every citrus-infused dish I can think of. It is the time of year when my decades-old dwarf lemon tree is overflowing with intoxicating Meyer lemons, hanging on spiky branches like yellow baubles on a Christmas tree, heavy and sweet with juice and zest. But this year my lemons are covered in a layer…