BGE Setup Preheat your Big Green Egg to 400°F with the cast iron skillet placed directly on the grate to get screaming hot.
The Braise Add the diced potatoes and the entire container of chicken stock to the Dutch oven, then close the dome to boil the liquid.
The Soften Cook the potatoes for 10 to 15 minutes until they are fork-tender and the chicken stock has mostly reduced.
The Swap Remove the Dutch oven from the grate using heat-resistant gloves and place the cast iron skillet in its place to preheat for 5 minutes.
The Render Brown the chorizo in the hot skillet while breaking it into small crumbles with a wooden spoon until it is fully cooked.
The Aromatics Incorporate the diced onions directly into the skillet with the chorizo and sauté until they are softened and translucent.
The Transition Transfer the tender potatoes from the Dutch oven into the skillet with the chorizo and onions to begin the crisping process.
The Crisp Sauté the potatoes in the rendered fat for 5 to 7 minutes while turning occasionally until they develop a deep golden-brown crust.
The Combine Stir the minced garlic into the hash and season the entire pan with salt and pepper once the potatoes are crispy.
The Finish Create small wells in the mixture and crack the eggs into them, then close the lid for 3–5 minutes until set.
The Serve Garnish the hash with fresh cilantro and jalapeños before serving the meal directly from the hot cast iron skillet.