French · Chandon
Chandon Brut Rose is made in California by the Moet family using the traditional method, with the second fermentation happening inside the bottle. That gives finer bubbles that survive being mixed with juice instead of collapsing.

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The one thing that matters
A rose mimosa is worth doing once. The wine already has red berry in it, so use less orange juice, about one part to three, and let the wine show.
Yes, and it is better than it sounds. A brut rose already carries red berry, so use less orange juice than usual, roughly one part juice to three parts wine, or the fruit in the wine gets buried.
If the mimosa is the point of the occasion, yes. Chandon is made by the traditional method so the bubbles are finer and last longer once juice goes in. For a large brunch where volume matters, prosecco is the sensible spend.