Step 1

Boil, steam or microwave potato and kumara, separately, until tender; drain.

Step 2

Preheat grill.

Step 3

Place potato and kumara, in single layer, on oiled oven trays. Brush potato and kumara with a little of the oil; grill, in batches, until browned.

Step 4

Meanwhile, combine remaining oil, onion, dill, basil, juice, capers, mustard and garlic in large bowl. Add potato and kumara; toss gently to combine.