How long does it take to cook roast potatoes?

The cooking time for roast potatoes depends on several factors:

* Size of the potatoes: Smaller potatoes cook faster than larger ones.

* Variety of potato: Some varieties, like Maris Piper, are better for roasting and may cook faster than others.

* Oven temperature: A higher oven temperature will cook the potatoes faster.

* Method of roasting: If you parboil the potatoes before roasting, they will cook faster.

General Guidelines:

* Parboiled potatoes: 20-30 minutes at 200°C/400°F.

* Unparboiled potatoes: 45-60 minutes at 200°C/400°F.

Tips:

* Use a meat thermometer: Insert the thermometer into the thickest part of a potato. It should reach an internal temperature of 90°C/194°F.

* Check frequently: Towards the end of the cooking time, check the potatoes every 5-10 minutes to ensure they are not overcooked.

* Don't overcrowd the pan: Leave some space between the potatoes so they roast evenly.

For best results, always check the potatoes for doneness. They should be tender on the inside and crispy on the outside.