Step 1: Prepare Your Vegetables
Start by rinsing and draining your black beans thoroughly in a colander under cold water. If using frozen corn, thaw it completely and pat dry with paper towels. If using fresh corn, cut the kernels from the cob (you’ll need about 3 ears of corn). For canned corn, drain well and rinse to remove excess sodium.

Step 2: Char the Corn (Optional but Recommended)
For extra flavor, heat a large skillet over medium-high heat. Add the corn kernels (no oil needed) and let them sit undisturbed for 2-3 minutes until they start to char. Toss and continue cooking for another 2 minutes. The slight charring adds a wonderful smoky sweetness. Let the corn cool completely before proceeding.

Step 3: Dice and Chop
Dice your Roma tomatoes into small pieces, removing excess seeds and juice. Cut the red bell pepper into small, uniform pieces. Finely dice the red onion. Mince the jalapeño pepper (remember to remove seeds for less heat). Chop the cilantro roughly. Mince your garlic cloves finely.

Step 4: Combine Everything
In a large mixing bowl, combine the corn, black beans, diced tomatoes, bell pepper, red onion, jalapeño, cilantro, and garlic. Gently toss everything together so the ingredients are evenly distributed.

Step 5: Make the Dressing
In a small bowl, whisk together the fresh lime juice, olive oil, ground cumin, salt, black pepper, and cayenne pepper (if using) until well combined.

Step 6: Dress and Toss
Pour the dressing over the corn and bean mixture. Using a large spoon or spatula, gently toss everything together until all ingredients are well coated with the dressing. Make sure to scrape the bottom of the bowl so the dressing distributes evenly.

Step 7: Let It Marinate
Cover the bowl with plastic wrap and refrigerate for at least 30 minutes before serving. This allows the flavors to meld together beautifully. The salsa actually tastes even better after 2-4 hours of marinating, or even the next day!

Step 8: Final Seasoning and Serve
Before serving, give the salsa a good stir and taste it. Adjust seasoning by adding more salt, lime juice, or a pinch of sugar if your tomatoes are particularly acidic. Serve chilled or at room temperature with tortilla chips, or use it as a topping for your favorite dishes!