2 oz Tequila, Partida Reposado
1⁄2 oz Elderflower liqueur, St. Germain
1 oz Lemon juice
5 oz Stiegl Grapefruit Radler
Instructions
Combine tequila, st. Germain, lemon juice and bitters into mixing glass. Shake. Pour over clean ice into Collins glass lined with lemon wheels. Top with grapefruit radler.