Peel and devein 250 grams of fresh shrimp, then chop them into small bite-sized pieces.
In a large bowl, combine the shrimp with the juice of 4-5 limes (approximately 100 ml) and a pinch of salt. Mix well and refrigerate for 30 minutes to an hour, allowing the shrimp to cook in the lime juice.
While the shrimp is marinating, peel and dice 1 large ripe mango into small cubes.
Finely chop 1 medium-sized red onion, 1 green chili, and a small bunch of fresh coriander leaves.
After the shrimp has marinated, drain the excess lime juice and add the diced mango, chopped onion, green chili, and coriander leaves to the bowl.
Season the ceviche with salt and black pepper to taste, and mix well.
Refrigerate the ceviche for an additional 15-20 minutes to allow the flavors to meld together.
Serve the mango and shrimp ceviche chilled, garnished with additional coriander leaves if desired.