I’ve always loved trahana — that tiny, fermented Greek grain made from milk or yogurt and cracked wheat. It’s one of the world’s oldest comfort foods. I fed it to my kids because it was fast and nourishing, and years later my daughter called me from New York asking where she could buy trahana — that’s how deep these foods stay with us. When I spoke with Dr. Theoklis Zaoutis for this episode, he reminded me that the gut is actually our biggest immune organ and that fermented foods help “train” it to stay in balance. This soup is very much in that spirit: Greek, simple, and naturally probiotic. Here I brighten it with roasted red pepper and a little fermented (black) garlic, then finish it with Greek yogurt for another layer of live cultures.