Wash and peel the mangoes, then cut the flesh away from the pits.
Cut the mango flesh into chunks and place it in a blender or food processor.
Blend until smooth, stopping to scrape down the sides if necessary.
If the puree is too thick for the blender to process, add water 1 tablespoon at a time.
For an extra-smooth texture, pass the puree through a fine-mesh sieve.
Taste and add a little lime juice for brightness or sweetener if the mango isn't sweet enough.
Use immediately, refrigerate in an airtight container, or freeze in small portions.