A recipe from around 1960, it is probably much older.
Key Lime Chutney with Dates Raisins
Cooking Time: ½ hour
Preparation Time: ½ hour
Category: Condiment
Cuisine: Indian
Source: Harvey Day
Ingredients
2 lbs. Key limes
2 ozs. salt
4 ozs. raisins, seedless
8 fl ozs cider or malt vinegar
4 ozs. dates, seedless
1 oz. ginger
1 oz. garlic
½ oz. chiles, red, dried, seeded stemmed
½ oz. mustard seed
4 oz. jaggery (brown sugar, but palm sugar preferred)
Instructions
Dates scorch easily. Do not leave the pot unstirred
Quarter limes, not all the way through. Rub with salt, put them in the hot sun for 3 days. Remove the salt. Remove the seeds.Slice the ginger on a mandoline as thinly as possible. Same for the garlic. Put the ginger, garlic,vinegar, mustard seed, brown sugar, raisins, and dates in a stock pot. Seed and stem the chiles wearing latex gloves. Add the limes, torn apart into the pot. Bring to a simmer on the lowest possible heat and cook, uncovered 30 minutes. Remove from the heat, cool to room temperature. Grind the contents in a food processor or food chopper. Bottle. Refrigerate
.Notes This may improve with age.