Make The Best Classic Mimosa now: pour chilled sparkling wine, top with fresh orange juice, and serve chilled.
If you want Grand Mimosas, pour a small tablespoon of Grand Marnier into each chilled champagne flute first. Use a small clear glass measuring spoon or a petite jigger held over each glass and let the warm amber liqueur settle in the base of the flute; this will give the finished drink a subtle orange-tinged depth. Keep the small Grand Marnier bottle and the measuring glass on the same painted pine surface — they remain part of the scene for continuity.
Tilt each slender flute slightly and fill it about halfway with chilled dry sparkling wine so a clear, pale effervescent layer forms. Immediately top each flute with chilled, freshly squeezed orange juice from a clear glass carafe so the vibrant translucent orange-yellow liquid crowns the wine and tiny bubbles continue to rise through both layers. The result should read as delicate effervescence meeting bright citrus — lots of tiny shimmering bubbles, a faint froth line where juice meets wine, and light condensation on the glass.

Arrange three of the filled flutes in a tight elegant trio for serving, leaving the rest nearby. Set them on the same soft off-white painted pine surface with a softly folded pink-and-white striped cloth and the discarded champagne cork and slightly crumpled wire cage in the foreground. Frame this at eye level, capturing the translucent orange-yellow color, rising micro-bubbles, the thin gleam along each rim, and little droplets of chill on the stems — a bright, celebratory, immediately sip-able presentation.
