You can find chipotle peppers packed in adobo sauce in the Mexican section of your local grocery. It is a small can and you can use these peppers in all kinds of recipes. They will stay for weeks in the ice box in an airtight sealed container. For this recipe you just want a few tablespoons of the sauce. If you are still hesitant about purchasing the can they do sell dry adobo seasoning.
Here is an article about freezing chipotle peppers. They are so good in so many things.
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