Cut up chuck into 1 1/2” cubes. Season with salt.
Heat up 2 tbsp ofcooking oil in a large Dutch oven over high heat. Sear the beef on all sides for 4 minutes in total.
Cook the beef in 2 batches, making sure that the pot isn’t overcrowded. Put in a bowl and set aside.
Add the other 2 tbsp of cooking oil to th Dutch oven. Turn the heat down to medium high. Add in the onions. Cook for 5 minutes until translucent.
Add in the garlic. Cook for another 2 minutes.
Add in the cumin, paprika, and salt. Cook for a minute.
Deglaze with the beer and stock. Scrape the brown bits from the bottom of the pot. Add in the beef.
While the beef in simmering, add cilantro, serrano peppers, and 1/4 cup of stock to a blender or food processor.
Purée.
Add the cilantro purée to the beef. Preheat your oven to 325 degrees. Cover the beef and cook for 2 hours.
Uncover and let cook for another 30 minutes.