You can make this simple and yet elegant vegan cake with any favorite seasonal citrus, from tangerines to clementines — If winter citrus is part of your life, make the most of it with this extremely simple olive oil cake recipe. Whether it’s Cara Cara, Blood, or Mandarin oranges, grapefruit, or Meyer lemon, this cake works with the flavor of the citrus fruits for a pantry-friendly snacking cake that brings…