Add tomatoes to a hot griddle.
Turn the tomatoes after 5 minutes, add the jalapeno, onion, and garlic to the griddle.
After 5 minutes, turn the tomatoes, jalapeno, onion, and garlic.
Roast for another 5 minutes.
Remove the jalapeno, garlic, and onion.
Make sure the tomatoes are roasted on all sides. Then remove.
In a blender, add the tomatoes, jalapeño, onion, garlic, lime juice, cilantro, salt and pepper.
Blend until smooth.