1-Step 1: Roast the Poblano Peppers Begin by thoroughly rinsing your poblano chiles under cool running water. Pat them dry with paper towels. Now comes the most important step for developing that signature smoky flavor. Stovetop Method: Place each pepper directly over a gas flame on your stove. Use tongs to turn the pepper frequently, allowing the skin to blister and char evenly on all sides. This process takes approximately 5-7 minutes total. You want the skin to be completely blackened and blistered. Alternative Methods: * Broiler: Place peppers on a baking sheet under your oven broiler. Turn every 2-3 minutes until all sides are charred. * Grill: Cook over medium-high heat, turning frequently, for that extra smoky charcoal flavor. * Quick-fry: Heat oil in a pan and fry whole peppers for 3-5 minutes per side until skins blister.

2-Step 2: Steam and Peel the Peppers Transfer your hot, charred peppers immediately to a plastic bag or wrap them in a damp kitchen towel. Let them steam for 10-15 minutes. This crucial step loosens the skin and makes peeling much easier. After steaming, remove the peppers one at a time. Gently rub off the charred skin under running water or with a paper towel. Be careful not to rinse too much, as you want to preserve the smoky oils that developed during roasting.

3-Step 3: Prepare the Pepper Strips Make a small slit lengthwise on each peeled pepper. Using your fingers or a small knife, carefully remove the seeds and veins from inside. If you prefer less heat, remove all the white membrane. For a bit more spice, leave some veins intact. Pat the peppers dry with paper towels, then slice them into strips about half an inch wide. If your peppers are particularly long, cut the strips in half so they’re easier to eat. Set aside while you prepare the other ingredients.

4-Step 4: Sauté the Aromatics Heat 2 tablespoons of vegetable oil in a large skillet or frying pan over medium heat. Add your julienned onion strips and sauté gently. The key here is to cook the onions slowly without letting them brown or burn. Stir frequently for about 5-7 minutes until the onions become translucent and soft. If using garlic, add the finely chopped clove now and cook for an additional 2 minutes, stirring constantly to prevent burning. The garlic should become fragrant but not brown.

5-Step 5: Combine and Cook Add your prepared poblano strips to the pan with the sautéed onions and garlic. Cook for 2 minutes, stirring constantly to combine all the flavors. The peppers should heat through and begin absorbing the seasoned oil. Now pour in 1 cup of Mexican crema, stirring gently to coat all the ingredients. Reduce the heat to low and let the mixture simmer for 2-3 minutes. The crema will thicken slightly and create a silky sauce that clings to every strip. For the potato variation: If you’re adding potatoes, boil peeled and diced potatoes until soft, drain well, and add them to the pan just before pouring in the crema. This creates a heartier dish that can serve as a main course.

6-Step 6: Season and Serve Taste your rajas con crema and add salt gradually until you reach your preferred seasoning level. Remember that the crema and cheese (if using) will add some saltiness, so start with less and adjust upward. Serve immediately while hot.