Before you gather your brunch crew to do the requisite “cheers” Boomerang, keep an eye on those with this pretty-in-pink mimosa. Before the ‘gram app is even opened, the sweet yet tart sparklers may just disappear.
Combine grapefruit juice, simple syrup, and bitters in a Champagne glass, and stir gently. Top with sparkling wine. Garnish with rosemary sprig and grapefruit wedge, and serve immediately.