Step 1

Heat oil in a large skillet over medium-high heat.

Step 2

Add the jalapeño and serrano peppers and cook for about 6-8 minutes, stirring occasionally, until the peppers are charred and blistered and all sides.

Step 3

Add the onions and cook for 3-5 minutes, stirring occasionally, until they have softened and started to caramelize.

Step 4

Remove the skillet from the heat. Add the lime juice and soy sauce. Stir together to combine.

Step 5

Transfer blistered peppers and onions to a plate or bowl and serve immediately or at room temperature.