You might try Il Piccolino on Robertson. I know they have it on their menu, in season, each year. But not sure if they've started yet. And very pricey.
Others known to have it are Buggy Whip and Kate Mantilini.
350 N. Robertson Blvd., West Hollywood, CA 90048
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They had them at Water Grill when I was there last week, but I don't know if they were fresh or not. They should be for the price they were selling them at.
And I just saw some for sale at the Whole Foods on 3rd & Fairfax, but per redfish62's note, this is apparently not the season for them, which I assume means the ones available here now are definitely not fresh, and/or not from Florida. I have heard of a variety coming out of Santa Barbara, but no idea if those are anywhere near as good.