In a small saucepan over medium heat combine raspberries, minced chipotle peppers in adobo sauce, sugar, shallot, ground cumin, minced garlic, salt, apple cider vinegar, and black pepper.
Bring the mixture to a simmer stirring occasionally. Reduce the heat to low and continue to cook the sauce for 10-15 minutes. Cook until the sauce has thickened slightly. The raspberries will break down in this process.
Remove the saucepan from the heat and carefully transfer the content to blender or food processor. Blend until smooth. You can also use an immersion blender directly into the pot.
Allow the sauce to cool slightly before serving. The sauce will thicken further as it cools.