I recently made my first batch of lime pickle - here's the link to this awesome & easy recipe (there's a lemon pickle recipe too):
Indian Food Rocks: Make Lime Pickle (sans oil) while the Sun Shines
I adore lemon pickle; I made the lime pickle instead because the available limes were cheaper & better looking than the lemons. Anyway, after it was done (5 weeks, not the 2 months suggested in the recipe), I went on one of my periodic "Why would anyone ever eat anything but Indian food" binges, & of course the lime pickle went spectacularly well with it.
Then, as always happens, after a couple of weeks of non-stop Indian food, I got a hankering for something else. I made a New England boiled dinner with a tri-tip I had corned - & discovered that Indian lime pickle goes GREAT with corned beef.
Another thing I intend to try is Moroccan chicken with lime pickle standing in for Moroccan preserved lemons. And when they come in, I'm going to try a blood orange/Meyer lemon pickle seasoned with szechuan pepper & ginger.
Also, fwiw, I understand that lemon pickle is usually not refrigerated. The recipe I used has no oil, & the author recommends refrigerating it once it's done.