1 (15-ounce) can black beans, drained and rinsed

1 (15-ounce) can corn kernels, drained and rinsed

1 medium tomato, diced

1 medium avocado, pitted, peeled, and diced

½ small red onion, finely diced

½ cup packed fresh cilantro leaves, finely chopped

1 medium jalapeño, ribs and seeds removed, finely diced

1 small garlic clove, minced

2 tablespoons freshly squeezed lime juice (from about 1 lime), plus more as needed

1 tablespoon canola or other neutral-tasting oil

½ teaspoon ground cumin

¼ teaspoon kosher salt, plus more as needed

¼ teaspoon freshly ground black pepper