Two notes: If you fall in love with this adobo, feel free to double the recipe. It keeps for months if refrigerated in a tightly closed jar. And if you like a sweeter, toastier flavor, roast the garlic cloves (still in their papery skins), in a dry skillet over medium heat, turning them regularly until soft and blotchy black in places, about 15 minutes. Cool, peel and blend with the other ingredients.
Scoop the powdered ancho chile into a blender or small food processor. Bring 1 ¼ cups water to a boil, pour over the chile, loosely cover the blender or secure the top of the processor and pulse to blend thoroughly. In a small microwave-safe bowl, collect the garlic, cover with water and microwave at 100% for 1 minute. Drain and add to the blender or processor, along with the spices, oregano, vinegar and 1 ½ teaspoons salt. Process until smooth.