Peel and remove the flesh from the mangoes. Do this over a bowl to catch the juices. You will need 1½ cups of flesh and juice for this recipe.
4 large ripe mangoes
Smash and peel 4 garlic cloves.Peel and roughly chop ½ onion. Peel and slice ginger root.
4 garlic cloves, ½ sweet onion, 2" ginger root
Making the Mango Sauce
Place the cut up mango and juice into a medium size saucepan. Add garlic, onion, ginger, apple cider vinegar, sugar, and salt. Heat over medium high heat until the sauce begins to boil. Reduce to a simmer and simmer for 15 minutes.
½ cup apple cider vinegar, ¼ cup white granulated sugar, ½ teaspoon kosher or fine grind sea salt
Using an immersion blender, food processor, or blender, blend the sauce until it is smooth. *Make sure to let the sauce cool before using a regular blender or food processor to avoid trapped steam and possible eruptions of the sauce.
Rinse the saucepan and return the blended mango sauce to the saucepan. Add pepper flakes and simmer for about 5 minutes.
Remove from heat and add lime zest and 1 Tablespoon of the lime juice. Taste and add more juice if needed. Transfer to a container and chill for 1-2 hours before serving. The sauce will thicken as it cools.
Yield is about 1½ cups of mango sauce. If your mangoes don't give off enough juice, you can add a little water. Increase the sugar if the sauce isn't sweet enough, this will vary based on the sweetness of the mangoes used. For a sweet mango sauce omit the garlic, onion, vinegar, and red pepper flakes (ginger is optional), and increase the sugar to ½ cup and add water to get the correct consistency.