In a small saucepan, sauté finely diced onion over medium heat until it browns. Stir in jalapeños. Cook a few more minutes

Rip the cheeses into smaller pieces and add to pot

Slowly pour in a small amount of milk & whisk into melting cheese. Add beer if using. Slowly add milk/cheese until desired consistency is reached. (Cheese will thicken quickly as it cools)

Stir in cumin & olive oil