Bring 4 quarts of water to a boil in a large pot. Add 1 tablespoon of the salt and the wax beans, return to a boil, and cook until just tender, about 3 minutes. Drain and plunge into a bowl of ice water. Drain again and set aside. Heat the oil and butter in a large skillet over medium heat. Add the almonds and cook, stirring often, until they begin to turn golden but not brown, about 2 minutes. Transfer to a plate and sprinkle with the remaining salt and the pepper. Place the beans in a large bowl, toss with the almonds, and serve.
Tip: You can use fresh green beans instead of yellow wax beans.