The phrase "little champagne" refers to a small amount of joy or celebration. It suggests a small, pleasant moment of happiness or accomplishment. Full definition
He is an adorable little champagne Havanese with the sunniest disposition you could ever imagine. (havaneserescue.ca)
I've been wanting a glass straw for a while now and this recipe is fabulous since I just purchased fresh figs and five (yes, five) different types of grapes including the adorable little champagne grapes like the ones pictured. (golubkakitchen.com)
We stopped by Ca Va, the cutest little champagne bar and restaurant for some appetizers and of course a few glasses of champagne and rosé before dinner at Blue Stem later that night. (charminglystyled.com)