Cook the ground beef and chorizo in a large skillet over medium heat until browned.
Break the meat apart using a spatula and drain excess grease.
Reduce the heat to low-medium and add the cubed Velveeta and shredded cheddar cheese.
Stir the cheese mixture continuously until everything melts smoothly.
Mix in the diced tomatoes, drained black beans, and jalapeños.
Keep stirring vigorously to ensure even distribution in the dip.
Pour in the milk gradually while increasing heat to medium, and stir gently.
Continue until the mixture is creamy and smooth.
Season with cumin, salt, and pepper, adjusting the seasoning to your taste.
Allow the dip to gently simmer for a few minutes, letting the flavors blend.