Add tequila, elderflower liqueur, and orange juice to a champagne flute.
Fill glass to top with champagne. Stir gently to mix.
Garnish with fresh strawberry, if desired.
Notes
Make these into big batch mimosas by combining 1 cup tequila, 2 cups elderflower liqueur, and four cups orange juice with one bottle of champagne.To prep for a crowd, I recommend pre-mixing the orange juice, tequila, and elderflower liqueur in a pitcher and setting that out with bottles of chilled champagne. This way, the bubbles don't fall flat and everyone can self-serve.