Robbe Dupon wins cointreau margarita challenge 2025 with sustainable cocktail in Angers Global bartenders highlight zero-waste mixology as competition emphasizes creativity and environmental responsibility in the cocktail industry

Robbe Dupon wins cointreau margarita challenge 2025 with sustainable cocktail in Angers #SustainableCocktails #ZeroWasteMixology #CointreauChallenge #BartenderChampion #CocktailCreativity