Task: Text Completion
Input (English): [header] How to make barbacoa [title] Puree the sauce ingredients. [step] Combine the chopped onions, olive oil, garlic, cumin, oregano, chiles, cider vinegar, and salt in a blender or food processor. Blend the ingredients together at medium to high speed until a thick puree forms. <sep> (A) [substeps] Puree the sauce until it is smooth but you have pureed all the ingredients and are still shaking it. This can take anywhere from a few minutes to several hours. (B) [substeps] Do not over puree the sauce. The stain of the maillard sauce will prevent it from adequately processing. (C) [substeps] Do not drain the adobo sauce from the chipotle chiles before adding them. You should pour the sauce into the blender along with the chiles. (D) [substeps] If using taco seasoning, pulse the mixture until it becomes thick. Place it back in the blender and pulse again until it forms smooth.
Output (English): C