
Start by placing the butter into the Ziplock bag with the cubed beef.
Place it in a large skillet over medium to low heat filled with boiling water and let it cook for 10 minutes.
Add the cornstarch and mix everything very well to incorporate.
In a large skillet over medium to low heat, add enough vegetable oil to cover the bottom, the butter and stir until completely melted.
Add the beef we prepared and fry until golden brown.
Next, add the head of garlic cut in half and let it fry for 2 minutes.
After this time has passed, remove the garlic from the skillet, add the onion cut into strips, the diced tomatoes, the red bell pepper cut into strips, the bacon also cut into strips and sauté for another 5 minutes.
Season with the salt, the black pepper, the chimichurri, the chili flakes, the mustard, the soy sauce, the water and stir everything very well to incorporate.
Cover the skillet and let it all cook for 10 minutes.
Next, dissolve the cornstarch into the water.
Add it to the beef and cook for another 2 minutes.
Serve.