In a blender, add the cooled espresso, milk, chocolate sauce, peppermint syrup, xanthan gum, and ice. You can adjust the sweetness and peppermint flavor to your liking after blending.
2 shots espresso, ½ cup 2% milk, 3 tablespoons chocolate sauce, 2-3 tablespoons peppermint syrup, ¼ teaspoon xanthan gum, 1 cup ice