In a small saucepan, heat 1 tsp. olive oil over medium heat.
Add the minced garlic and sauté for about two minutes or until the garlic has softened.
Add 2 cups of black beans, ¼ tsp. ground cumin, 1 tsp. limejuice, salt, and pepper to saucepan and stir to combine. Reduce the heat to low and cook, stirring occasionally, for 10-15 minutes while you prep the rest of the taco ingredients.