How To Make Flash Brew Coffee

This Flash Brew Recipe is a great, cold coffee drink that is much quicker to make than traditional cold-brew. 3 ingredients is all you need, and you’ll be on your way to iced-coffee style bliss.


  • Prep Time: 5 minutes
  • Cook Time: 5 minutes
  • 1/4 C whole coffee beans (ground to table salt consistency )
  • 1 1/2 C ice
  • 1 3/4 C hot water
  • creamer (optional)


  • Fill a kettle with water and place on the stove over hight heat, and heat to about 190-205 Degrees F- or about 3-5 minutes. Remove from heat and use in next step.
  • Prep your Chemex filter paper by placing it into the Chemex, and pour about 1/2 C water on it. *Lightly wetting the filter will remove any paper taste. Discard the water that formed inside the Chemex.
    Remove the filter and fill the Chemex with ice.
  • Place the wet filter back into your Chemex, and pour the coffee grounds on top of the filter. Saturate the coffee grounds with about 1/2 of the hot water, then continue to pour the rest of the water onto and around the coffee grounds and filter.
    *As you pour, you'll notice the ice melting and coffee forming.
  • Pour the prepared coffee into a glass filled with ice, and serve with your choice of cream, almond milk, sugar, etc..
    Enjoy immediately!

This recipe is based on using a Chemex as the preferred coffee pour over device. If not using a Chemex, please follow the specific instructions used for your device in the prepping and brewing stages.

*This post contains an affiliate link.  Thanks for your support!

Originally posted July 2019, updated September 2020

We make a lot of coffee drinks around here. If you follow me on Instagram, then you’re used to seeing my husbands daily morning coffee ritual. Flash Brew Coffee is usually made in the summer time over here, but it can really be enjoyed any time of year. If you like cold-brew coffee, then this is a recipe for you!

What is Flash Brew Coffee?

A Japanese style coffee that’s been chilled very quickly and is served over ice. Chilling it quickly locks in the flavor.

How to Make Flash Brew Coffee

First, get yourself quality coffee beans, grind it yourself (if you want, or buy it ground), make sure you have ice, water, and creamer (optional) on hand. OH and I definitely need to note that it’s best used with a pour over type of brewing machine/method. Eric uses this Chemex.

If using the Chemex, place the filter on and wet it with hot water so that the taste of paper doesn’t transfer. Pour the ice inside the chemex and place the coffee grounds in the filter. Bloom it, and transfer into a glass over ice! Add cream if you’re into that and you’re golden!

Using Format