1.Heat a barbecue or heavy frying pan until very hot. Season steaks, drizzle with oil and cook over high heat for 3 minutes, turn and cook for 2 further minutes. Remove from the heat and rest for 5 minutes. Slice wafer thin.
2.Toss together all salad ingredients, along with sliced steak. Garnish with fennel leaves and small beet leaves if you have them. Season to taste.
3.To make the dressing; combine dressing ingredients in a small jar and shake. Drizzle over salad just before serving.