1 1/4 oz tequila
1/4 oz Cointreau
1/4 oz Grand Marnier
juice of half a small lime
2 oz CASCAL Fresh Tropical Natural Soft Drink (or similar soda)
Add all ingredients into a mixing glass over ice, except the soft drink. Shake hard.
Strain out into rocks glass filled with ice and top off with CASCAL or soda
Stir gently. Garnish with lime wedge.