Watercress, citrus and radish salad

Method

1. Whisk the sugar, wholegrain mustard and some salt and pepper into the grapefruit juice, then whisk in the extra-virgin olive oil.
2. Finely slice the radishes and mix with the watercress and grapefruit segments.
3. Drizzle with the dressing and serve with roast or barbecued meat or fish.