The El Diablo Cockail makes 12 cocktails 1 can (12 oz) frozen limeade concentrate 1 1/2 can (18 oz) tequila blanco 2/3 can (8 oz) creme de cassis 1/2 can (6 oz) water (still, not soda or tonic water) 1 1/2 can (18 oz) ginger beer Mix the limeade, tequila, cassis, and water together in a large pitcher. Immediately before serving, add the ginger beer. Serve over ice. Feeling fancy? Garnish with blackberries.