Finely grate the lime rinds, cut limes in half and juice them. We use an old fashioned hand grater and electric citrus juicer.
Peel and chop mangos, saving juice and pulp ( messy but fun. ) Crush the fruit throughly, or run thru food processor with the medium blade. Idea is to end up with chunky puree, not mango juice!!
Measure 4 cups of this puree into a large pan. Add the grated lime rind and 3/4 cup of the fresh lime juice ( add bottled lime juice if necessary ) Add lemon juice and Sure-Jell, mix very well to dissolve powder.
Add all of the vegan sugar, mixing well to dissolve. then bring to a full rolling boil over medium high heat. Youll have to stir almost constantly to avoid burning. Boil for one minute, stirring constantly, and them remove from the heat.
Stir and skim for 5 minutes, then ladle into hot, sterilized jars. Seal and invert the jars for a few minutes to set the lids.
Pretty stuff, lots of fruit taste, and very, very good on homemade whole wheat vegan bread/toast.