In a bowl, combine all ingredients listed above for the Creamy Ranch Dressing. Stir until vinegar and spices are well incorporated. Season to taste with salt and pepper.
For the Taco Meat and Black Beans:
In a large sauté pan, heat the canola oil over medium high heat. Add the ground beef, breaking apart with a wooden spoon, cooking until browned, about 5 minutes. Add the black beans and the spices listed above for the Taco Meat and Black Beans. Stir until well combined and cook until beans are heated through, about 2 minutes more. Season to taste with salt and pepper.
For the Taco Salad:
Arrange the lettuce, pepper, tomato, and corn on serving plates. Spoon on the Taco Meat and Black Beans and top with shredded cheddar. Drizzle on some of the Creamy Ranch Dressing and garnish with chopped chives.