method
1. Add the beans to a pan of boiling salted water, bring back to the boil and cook for 2 minutes. Drain and refresh under cold running water.
2. Melt the butter in a skillet, add the flaked almonds and fry for a minute or two until golden. Add the beans and toss to mix. Season with salt and pepper to taste.
3. Drizzle with balsamic vinegar just before serving.