Sweet and tangy pickled mango is a delightful addition to salads, fish tacos, sandwiches, and more. Of course, it also makes for a fantastically refreshing snack enjoyed straight from the jar.
Combine water, vinegar, sugar, and salt in a small saucepan over high, and bring to a boil, stirring constantly until sugar dissolves. Cool to room temperature, about 1 hour.
Place mango slices in a clean quart-size jar. Pour vinegar mixture over mango. Seal with lid, and refrigerate 8 to 12 hours before serving.