Step 1

Put all of the dressing ingredients in a jam jar, replace the lid and shake until well combined. Season with salt and pepper. Add more chilli if desired.

Step 2

For the salad, rinse the black beans under cold running water and drain. Put in a large mixing bowl and pour over half of the dressing.

Step 3

Add the remaining salad ingredients, apart from the watercress and avocado and stir well to combine.

Step 4

To serve, divide the watercress among 4 serving plates. Spoon the salad on top, then cover with the avocado cubes. Drizzle a little more dressing over each portion.