Combine the mango, red onion, cilantro, and jalapeño (if using) in a bowl.
Season: Add the lime juice, red pepper powder (if using), salt, and black pepper.
Toss gently and let sit for 10–15 minutes for the flavors to meld.
Video
Notes
Korean red pepper powder, also called gochugaru, adds a mild, smoky heat and beautiful red color without overpowering the fresh flavors. Use Tajin seasoning instead, or omit as desired.Optional additions:
Diced avocado
Finely diced red bell pepper for extra crunch
A pinch of chili flakes or smoked paprika
A teaspoon of maple or date syrup if the mango isn't very sweet