Step 1

Heat the oil in an 8- or 10-inch skillet over medium-high heat. Add the chorizo and cook until lightly browned, about 4 minutes; drain off most of the liquid.

Step 2

Add the tomato, onion, and jalapeño and cook, stirring frequently, until the onion begins to soften and brown, about 7 minutes. Add the tequila (if using) and cook, stirring, until reduced to a glaze.

Step 3

Sprinkle in the cheese. Stir slowly and constantly until just melted then stir in the cilantro. Serve immediately in a warm dish with chips for dipping.