Salsa Roja, which translates to 'red sauce' in Spanish, is a staple in Mexican cuisine. Growing up in a Mexican household in San Antonio, I remember my grandmother spending hours in the kitchen, perfecting her Salsa Roja recipe. She would char the tomatoes, tomatillos, and onion on a comal, then blend them with spices and chiles to create a rich, velvety sauce.

As a home cook, I've learned to appreciate the beauty of Salsa Roja. It's a versatile sauce that can be used as a marinade, a sauce for tacos, or as a dip for vegetables. In this recipe, I'll share with you my grandmother's secrets for making the perfect Salsa Roja.

What makes this recipe special is the combination of flavors and textures. The charred tomatoes and tomatillos add a smoky depth, while the onion and garlic provide a pungency that's balanced by the acidity of the tomatoes. The ancho chiles add a slightly sweet and spicy flavor, which is enhanced by the oregano and cumin.

This recipe is perfect for anyone who loves Mexican cuisine and wants to try their hand at making a traditional sauce from scratch. It's also a great recipe for those who are looking for a versatile sauce that can be used in a variety of dishes.

In this recipe, we'll start by charring the tomatoes, tomatillos, and onion on a comal or under the broiler. Then, we'll blend them with spices and chiles to create a smooth, velvety sauce. We'll finish the sauce with a squeeze of fresh lime juice and a sprinkle of chopped cilantro.

The key to making a great Salsa Roja is to char the tomatoes, tomatillos, and onion. This step adds a smoky depth to the sauce that's essential to its flavor. When you char the vegetables, you're caramelizing their natural sugars, which creates a rich, complex flavor.

Another important step is to toast the ancho chiles. This step enhances their flavor and aroma, and it helps to bring out their natural sweetness. The ancho chiles are the backbone of the sauce, providing a deep, slightly sweet flavor that's balanced by the acidity of the tomatoes.

The type of tomatoes you use is also crucial. We're using a combination of fresh and canned tomatoes to create a rich, velvety sauce. The fresh tomatoes add a bright, acidic flavor, while the canned tomatoes provide a deeper, more complex flavor.

Finally, the resting time is essential to allow the flavors to meld together. When you let the sauce rest, the flavors have a chance to combine and intensify, creating a rich, complex flavor that's perfect for tacos, grilled meats, and vegetables.

To make this Salsa Roja recipe, you'll need a few simple ingredients. The key players are the tomatoes, tomatillos, onion, garlic, ancho chiles, oregano, cumin, salt, and pepper. You'll also need some olive oil for roasting the vegetables and a squeeze of fresh lime juice for finishing the sauce.

When shopping for the ingredients, look for fresh, ripe tomatoes and tomatillos. You can find ancho chiles at most Mexican markets or online. If you can't find ancho chiles, you can substitute them with guajillo or mulato chiles.

This Salsa Roja is perfect for serving with tacos, grilled meats, or vegetables. You can also use it as a dip for chips or as a sauce for enchiladas or chiles rellenos.

Some other ideas for serving this sauce include using it as a topping for grilled fish or chicken, or as a sauce for roasted vegetables. You can also use it as a marinade for grilled meats or vegetables.

This Salsa Roja can be stored in the fridge for up to 1 week or frozen for up to 6 months. To freeze the sauce, let it cool completely, then transfer it to an airtight container or freezer bag.

To reheat the sauce, simply thaw it overnight in the fridge, then reheat it in a saucepan over low heat, stirring occasionally.

You can also can the sauce using a water bath canner, this will allow you to store it at room temperature for up to 1 year.

When storing the sauce, make sure to keep it in an airtight container and label it with the date and contents.