It could be a typo/editing mistake. Does he continue to cook in the oven or on the stove top? That would be the best guide to what he meant.
From the way it's phrased, I think he means to heat the dutch oven in an oven set to 350. Probably take about 20-30 minutes from cold, varying some by oven.
From the way it's phrased, I think he means to heat the dutch oven in an oven set to 350. Probably take about 20-30 minutes from cold, varying some by oven.