Set your oven rack about 6 inches from the broiler and preheat the broiler to high heat.

Place the tomatillos, jalapeño peppers, and garlic cloves on a foil-lined baking sheet. Broil for 5 minutes, then flip and broil for another 5 minutes until the vegetables are charred.

In a blender, combine the roasted tomatillos, jalapeños, and garlic (squeeze out the garlic flesh), with the chopped white onion, cilantro, lime juice, and salt.

Blend until smooth or leave a bit chunky by pulsing. Taste and adjust seasoning if needed. Chill before serving with tortilla chips.