Requires approx 4-5 minutes.
Best Answer: Not long, but cook it in a traditional oven. The taste is so much better. Use King Edward potatoes scrub and prick put on baking tray and into oven gas mark 7 for and 1 hour 10 mins, test to see if cooked turn up oven to mark 9 for last five minutes of cooking time...lovely crisp skin. 1 For example, if one large potato takes 10 minutes to cook, two large potatoes would take between 16-17 minutes. 2  If you prefer crispy skinned potatoes, you can cook the potatoes in the microwave for 5-6 minutes, then transfer to a baking sheet and bake in an oven preheated to 400 °F (204 °C) for 20 minutes. To cook a jacket potato in a microwave requires approx 4-5 minutes in an 800 microwave, but you need to make sure you turn the potato instead of leaving it in the same position for the complete cooking period. I normally finish it off in the oven to crisp the skin up. Source(s): personal. R M · 7 years ago. 1 If you prefer crispy skinned potatoes, you can cook the potatoes in the microwave for 5-6 minutes, then transfer to a baking sheet and bake in an oven preheated to 400 °F (204 °C) for 20 minutes. 1 If you prefer crispy skinned sweet potatoes, you can cook the potatoes in the microwave for 5-6 minutes, then unwrap your sweep potato and transfer it to a baking sheet and bake in an oven preheated to 400 °F (204 °C) for 20 minutes. 6. Put the plate in the microwave and choose a cooking time. Cooking times will vary depending on the size of the potato and the power of the microwave. Most medium to large potatoes will take between 8-12 minutes to cook at full power. Depending on size of potato, place in Microwave for 7 - 10 minutes. Feel the potato. If it has gotten a little soft, take the potato with the papertowel and wrap in foil tying ends together. Let stand for about 5 minutes. In an 800 watt microwave, it takes 7-10 minutes (depending how big the potato is). A microwave with a lower wattage will take slightly longer. To stop the potato exploding during cooking, you should prick the skin of the potato with a fork/knife a few times on each side.
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how long does it take to cook a jacket potato in a microwave