What is the primary juice ingredient in a Mimosa?

The primary juice ingredient in a Mimosa is orange juice. This classic cocktail is traditionally made by mixing equal parts of chilled sparkling wine and orange juice, making it a popular choice for brunches or celebrations. The citrusy flavor of the orange juice complements the effervescence of the sparkling wine, resulting in a refreshing and invigorating drink.

The other juices mentioned do not align with the traditional recipe of a Mimosa; for instance, pineapple juice and apple juice would create entirely different flavor profiles, while lemon juice would add a tartness that wouldn't mirror the intended taste of a Mimosa. Thus, orange juice is essential for achieving the cocktail's characteristic flavor and identity.