I don't know. It's super rare. I get it at the Philly steak joint down at USC or if I'm actually in Philly. It's a local Philly company that died off and was resurrected by some tiny company in NJ. There is Stewart's, who bought the rights to the Frank's names but the Stewart's does not taste right.

btw: the google search results are hysterical

https://www.google.com/search?q=frank%27s+black+cherry+wishniak&source=lnms&sa=X&ved=0ahUKEwjn99vW0JDbAhUR4WMKHVgGBjcQ_AUICSgA&biw=1366&bih=631&dpr=1
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I really wanted to go to that Bukake because I thought for sure that you were going to be on the receiving end. - Ryan Knox to Jeff Steward