Ingredients

1/2 C vegetable oil

4 medium onions, sliced lengthwise 1/8invh thick

4 T unsalted butter

2 jalapeños thinly sliced

Juice of 4 limes

Salt and pepper

4 lbs. fresh Mexican chorizo

Cilantro sprigs

Preparation

In a large skillet, heat the vegetable oil.Add the sliced onions and cook over low heat, stirring occasionally until they are browned, about 1 hour. Stir in the butter, jalapeños and lime juice and season with salt and pepper.

Light a grill. Grill the chorizo over moderately high heat, turning, until the sausages are browned all over and cooked throughout, about 15 minutes. Transfer the sausages to a platter and top with the caramelized onions. Garnish with the cilantro.