Place lettuce over the base of a large shallow bowl or platter. Â
Combine tomatoes, corn, carrot and shallots. Sprinkle over lettuce layer.Â
Top with avocado.Â
To make dressing, whisk buttermilk, coriander, juice and chilli powder in a jug. Â
Drizzle dressing over salad. Garnish with coriander leaves. Â