Just returned from trekking trip to Patagonia. In Puerto Natales, Chile, at a phenomenal tiny place that had a few vegetarian options, we were served soups that came out of the kitchen to our table vigorously boiling and continue to boil in the serving bowels for a full 1-2 minutes. It was incredible. The bowels were basic dark brown, held about 4-5 cups, and were about 1/2-3/4 inch thick...look like dark wood, but felt like ceramic. Despite boiling, the top rims could be safely touched, but the lower area was too hot and so they were delivered to the table on serving plates. We asked the cook but our spanish was rough. Best as we figured, these were ceramic. We think she said once the soup was made, she ladled it into the serving bowel, and heated it again directly on the flames to a boil, then walked it out to customers. Has anyone seen this? I'd love to find a few such bowels. Thanks. Judy.