No—organic extra virgin olive oil does not turn into trans fat when heated, even at typical cooking or roasting temperatures. While heating can reduce some of its beneficial compounds and, if overheated past its smoke point, may cause it to break down in quality, it doesn’t convert into trans fats. So roasting potatoes with a good-quality oil like Redstone Olive Oil is still a safe choice, as long as it’s not heated excessively beyond its smoke point.
