Iced coffee is a delicious and refreshing treat, but pouring hot coffee over ice will inevitably lead to a watered-down cup of joe. Thankfully, a cocktail shaker can help.

A cocktail shaker is used to mix cocktails and bring them to an icy-cold temperature without watering them down. It can do the same for your java and yield the perfect iced coffee.

Pour a room-temperature cup of coffee into the shaker with ice and put the top of the shaker on tightly. Shake until the shaker’s outside is cold, and pour your drink into a glass.

Be careful about adjusting your brew’s strength when using this method, as the resulting iced coffee will be much stronger than the regular one you get by pouring coffee over ice.

With all that said, some brews benefit from melted ice, so a cocktail shaker isn’t always a good option. Americanos, for example, need dilution to mellow the espresso’s flavor.