Citygate: A point or measuring station at which a distributing gas utility receives gas from a natural gas pipeline company or transmission system. Coke oven gas: The mixture of permanent gases produced by the carbonization of coal in a coke oven at temperatures in excess of 1,000 degrees Celsius.
Baking Sweet Potatoes. 1  Preheat oven to 400Â°F. 2  With a fork, pierce sweet potato skin 5-6 times. 3  Place on baking sheet lined with foil. 4  Bake until tender, 45 minutes to 1 hour.
5. Preheat the oven to 350ÂºF (about 180ÂºC). Sweet potatoes can stand up to a variety of temperatures, so if you are cooking something else, go ahead and put the potatoes in at a different temperature, just make sure to adjust your cooking time.lace sweet potatoes on your roasting tray and put in the oven. If cooking at 350ÂºF, roast for about an hour. Check on the potatoes after about 45 minutes.