A barbecue that cooks perfect burgers in just 60 SECONDS? We test the 500C gadget that does pizzas in 90 seconds and a roast in 20 minutes

The Roccbox barbecue (pictured), a sort of adapted pizza oven that heats to a steady 500C in 15 minutes, can be taken anywhere you like: beaches, camping holidays and friends' houses. 

Burgers cooked in the Roccbox are brown on the outside and pink - not bloody - on the inside, pizzas are light and crisp with a rich cheesy topping and roast chickens are perfectly succulent. 

It can even be used to bake mouth-watering bread in just five minutes.