How to Make It
In a medium saucepan, cover the potatoes with water and bring to a boil. Add a generous pinch of salt and simmer over moderate heat until tender, about 20 minutes. Drain and let cool slightly, then cut the potatoes in half lengthwise.
Meanwhile, in a food processor, combine the kale with the almonds, lemon juice and garlic and pulse until the kale and nuts are very finely chopped. With the machine on, drizzle in the olive oil and process until incorporated. Season the pesto with salt and pepper.
In a large bowl, toss the warm fingerlings with the pesto and serve.