Caldero Alternatives: If a traditional caldero is not available, you may use a ceramic oven-safe pot that can also be used on the stovetop. Alternatively, you can use an oven-safe dish for the roasting process and then transfer the garlic-infused oil to a regular pot for the stovetop portion of the recipe. The key is finding cookware that can handle both the oven roasting of the garlic and the gentle heating needed for infusing the oil with achiote.