A Valoriani 60 wood-fired oven, from Orchard Ovens, in action. This wheeled oven, supplied with self-assembly stand, is a ready-to-go option that can see you cooking pizzas only a few. hours after delivery. The oven heats up in around 30 minutes. and will stay warm to cook the next day, with just a 20 minute warm-up. The oven will cook one 30cm pizza at a time, but cook it in just a couple of minutes, so nobody waits too long for their food.