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.
The process is easy: Just toss cut-up veggies with olive oil, salt, and pepper before roasting. You can add herbs or garlic if you want to kick up their flavor. You can roast sweet potatoes (or any vegetable, for that matter) at any oven temperature from 300 to 500 degrees Fahrenheit.