5 things that help you make iced coffee at home
The five, at a glance
1Cold brew for smooth, low-acid coffee2Or brew hot, strong, straight onto ice3Stop it going watery with coffee ice cubes4Brew stronger to survive dilution5Sweeten while it is still warmCold brew for smooth, low-acid coffee
Steeping coarse grounds in cold water for 12–18 hours extracts a sweet, smooth, low-acidity concentrate — no heat, no harshness. It is the most forgiving iced method.
Or brew hot, strong, straight onto ice
When you have not planned ahead, "flash" iced coffee — brewing hot and concentrated directly over ice — locks in bright, aromatic flavour the moment it chills.
Stop it going watery with coffee ice cubes
Ordinary ice melts and dilutes your cup to sadness. Freezing leftover coffee into cubes means it only gets stronger as they melt.
Brew stronger to survive dilution
Iced coffee tastes weak when it is brewed at hot-cup strength and then diluted by ice and cold milk. Build in extra strength from the start.
Sweeten while it is still warm
Sugar barely dissolves in cold liquid, so it sinks to the bottom of iced drinks. Sweeten the warm coffee, or use a simple syrup. Start from a good hot cup — see better home coffee — then chill it well.
What didn't make the list
It half-melts the ice and leaves you with lukewarm, watery coffee. Brew stronger and use plenty of ice — or coffee ice cubes.
Past about 24 hours cold brew turns woody and over-extracted. Strain it on time and keep the concentrate in the fridge for up to a week.
Questions people ask
No — cold brew is steeped in cold water for hours and is smoother and less acidic; iced coffee is usually hot-brewed then chilled and tastes brighter. Both are great over ice.
The concentrate keeps about a week in the fridge. Diluted with milk it is best within a couple of days.