The Crushery's website makes it clear that liquid nitrogen ice cream is a big deal: they make it part of their primary navigation.

A recent interview with chef John Davidson gives this teaser:

Make sure to leave room for dessert. John makes liquid nitrogen ice cream to order. Take a look at his list of ingredients and put together the perfect combination of flavors. Salted, chocolate caramel or honey lavender or just plain vanilla – John estimates that there are over 10,000 different scoops he can make . It’s also fun to watch him make the liquid nitrogen ice cream. He does it in a mixer as mist billows around him freezing the ice cream so quickly that ice crystals stay small giving it a very creamy texture.