Preheat your oven to 400°F (200°C) and place the tomatoes, jalapeños, and unpeeled garlic cloves on a baking sheet. You can drizzle little bit of oil at this stage.
1 tablespoon olive oil
Roast them for about 10-15 minutes or until the skins are blistered and slightly charred. This step is crucial as it provides the signature roasted flavor that sets authentic Salsa Roja apart.
If not using the oven,
Wash tomatoes and cut them into half.
3 medium tomatoes
Heat oil in the pan and place garlic, tomatoes, peppers and roast them on medium flame for about 8 minutes and until skins are blistered and slightly charred.