Wash mangoes, peel and dice

Prepare jars and tools, must be bolied for 10-15 minutes.

Put diced mangoes in big pot.

Put in all sugar, lemon juice and rind.

Mix until all sugars melt in medium high heat.

Put in butter

Mix once in a while to avoid burning.

Boil until it thickens. Use cold plate test.

Pour in jar.