Start by peeling the mango with a sharp knife or vegetable peeler, then carefully dice it into small, juicy cubes on a cutting board.
Finely chop the red onion until it resembles a coarse paste, adding a sharp crunch and pungent aroma to the mix.
Roughly chop the cilantro leaves and tender stems, releasing a fresh, lemony scent as you work.
Squeeze fresh lime juice into a small bowl using a lime squeezer, capturing the bright, citrusy aroma.
Seed and finely mince the jalapeño, feeling the fiery heat develop as you work, and set it aside.
Combine the diced mango, chopped red onion, cilantro, and minced jalapeño in a mixing bowl, gently tossing to mix.
Pour the freshly squeezed lime juice over the mixture, then sprinkle with salt and add honey or agave if using, adjusting to taste.
Carefully toss everything together until well combined, hearing the ingredients collide and smelling the fresh, tangy aroma.
Let the salsa sit at room temperature for about 10 minutes to meld the flavors and allow the juice to soak into the fruit and herbs.
Give the salsa a final gentle stir, taste, and adjust salt or lime if needed before serving.
Serve the vibrant mango salsa in a bowl, with chips, grilled chicken, or seafood for a fresh, colorful finish.