Step 1

Add the olive oil to the pressure cooker to cook over medium heat (press the 'Saute' button to begin cooking at medium saute heat). When the oil is hot, add the chopped onion, bell pepper, garlic and ground meat. If you like your chili very spicy, add the optional hot pepper (but be aware of the spiciness of your chili powder and chipotles). Saute, stirring occasionally, until the vegetables begin to soften and the meat is browned.

Step 2

Stir in all remaining ingredients except the chopped chocolate and vinegar. Cover the pressure cooker with the lid, and be sure that the valve is in sealed position. Cook under high pressure for 10 minutes (with Instant Pot, press ‘Cancel’ to stop saute mode before closing the lid, then press ‘Manual’ to select 10 minutes).

Step 3

When the cooking time is complete, either open the valve for a quick release, or allow the pot to de-pressurize naturally. After opening the lid, stir in the chocolate and vinegar, and season to taste with salt before serving and garnishing as desired.