Cook potatoes in a large saucepan of boiling salted water for 10 minutes or until just tender. Drain. Halve or quarter potatoes, depending on size. Place in a large bowl. Add 1 tablespoon oil. Toss to coat.
Meanwhile, place mince, breadcrumbs and 1/4 cup relish in a bowl. Season with salt and pepper. Mix well to combine. Divide mince mixture into 8 equal portions. Shape into 1.5cm-thick patties.
Heat an oiled barbecue chargrill on high heat. Add potatoes. Cook for 4 minutes each side or until charred and browned. Return to bowl. Add remaining oil, lemon juice and garlic. Season with salt and pepper. Toss to combine. Set aside.
Heat barbecue plate on medium. Cook patties for 2 to 3 minutes each side or until cooked through. Cook tomatoes for 4 minutes or until skins start to split. Add parsley, chives and kale to potato mixture. Discard garlic cloves. Toss to combine.
Serve patties with potato salad, tomatoes and remaining relish.
Serving size: 4
Recipe courtesy of taste.com.au