To preserve the Key lime harvest (or your purchase), in order to honor the time of it's first commercial sucess, do as follows:
16 fluid ounces of ripe Key limes (yellow or yellow spotted)
1 tablespoon of salt
3 to 4 chile piquin or tepin (small round or small oblong)
Juice limes, add salt, add chiles. Cover tighty. Age 6 weeks before use. Shake drops on fish, dessert, fruit or fruit salad, Jello, eggs for breakfast, and into certain cocktails of your choosing, where the sour will be a welcome addition.
Thanks to Charles Baker for this info. The Old Sour recipe is all over the internet.