Step 1

Bring cast iron pan to medium-high heat and add a splash of oil.

Step 2

Add the whole jalapeño peppers, quartered onion, and garlic to the hot pan.

Step 3

Roast ingredients for about 5 minutes until lightly browned, turning frequently for even searing.

Step 4

Remove the peppers and carefully slice them into rings.

Step 5

Simmer the jalapeños and onions in a pan with the water for about 5 minutes, stirring occasionally.

Step 6

Add in the garlic, salt, cumin, and sugar, stirring to combine. Simmer an additional 1 minute or so.

Step 7

Add the simmered mixture into a blender along with the cilantro and vinegar.

Step 8

Blend until smooth and let cool.

Step 9

Season to taste by adding more salt and/or cumin, as desired.

Step 10

Add into hot sauce bottles, mason jars, or container of choice and store in the refrigerator.