Use an old fashioned or highball glass. The cocktail is then shaken and poured into a highball glass. Shake, and strain into a highball glass filled with crushed ice. Blue Lagoon is commonly poured on a highball glass. Build all ingredients in a highball glass filled with ice. It is cylindrical in shape and narrower and taller than a highball glass. A highball glass is filled 3/4 with ice. A highball glass is a glass tumbler that can contain . Strain the glass into a highball glass and garnish with a mint leaf.