Pork Tenderloin with Spicy Rhubarb Glaze and Grilled Spring Onions

Name: Pork Tenderloin with Spicy Rhubarb Glaze and Grilled Spring Onions
Ingredients: 1 tablespoon unsalted butter; 1/4 cup finely chopped onion; 2 rhubarb stalks, thinly sliced; 1/2 cup pomegranate juice; 1/4 cup honey; 1 teaspoon soy sauce; Pinch red pepper flakes; Kosher saltand freshly ground black pepper; 6 small spring onions or scallions, trimmed and halved lengthwise, plus 1/4 cup thinly sliced scallion greens; 2 tablespoons extra-virgin olive oil; Smoked flakey salt, for sprinkling; One 1 1/4-pound pork tenderloin; 1/4 cup whole almonds, coarsely chopped; Fresh mint leaves, for garnish