As It Happens The ice cream — flavoured with cajun seasoning, butter and garlic and topped with an entire crawfish — sounds like a novelty treat. But in the seven years this Texas shop has been serving it up, it's become a staple. 'I can't even explain how popular it is,' says Red Circle Ice Cream owner Nickey Ngo Listen to this article Estimated 3 minutes The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Nickey Ngo serves up crawfish ice cream at Red Circle Ice Cream in Houston, Texas. (Reuters) LISTEN | Full interview with Red Circle Ice Cream owner Nickey Ngo: As It Happens 6:25 Texas shop's crawfish ice cream is so popular, it keeps selling out Every January, at the start of crawfish season, Houston ice cream shop owner Nickey Ngo's phone starts ringing off the hook.…