Tropical Fruit Gelée

Grate the zest of 1 lime into a dish. Squeeze 2 of the limes, and slice 2 of thinly. Soak the gelatin in cold water. Mix the mango juice with the lime juice and zest. Dissolve the gelatin in a small saucepan over low heat. Strain the mango mixture through a fine strainer and add to the gelatin. Remove from the heat. Rinse the cape gooseberries, pat dry, and add to the mixture. Transfer the mixture to a large bowl, top with the slices of lime, and chill in the refrigerator until set.