Here are some flavorful garnish ideas for this lentil potato soup: a dollop of Greek yogurt or sour cream (this is obviously not vegan, so if you want to keep the soup vegan of course skip this one!); cilantro or parsley leaves, a sprinkle of red pepper flakes, a sprinkle of cracked black pepper, and/or a wedge of lemon. To serve alongside the soup, try a loaf of crusty bread, crackers, or breadsticks for dipping. You can also serve it with a green side salad or a side of steamed or sautéed veggies. Or, for more protein, you can enjoy a cup of the soup paired with a serving of grilled fish or chicken breast.