Which Single-Origin Coffee Beans Make the Best Cold Brew? A Detailed Guide to Cold Brew Coffee Making Methods

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Cold brew coffee has taken the world by storm. You may have noticed that in many cafés it costs more than a hot cup. Ever wondered why?

The answer is time. Pulling a shot or brewing a hot cup usually takes under ten minutes, grinding included. Cold brewing takes at least three to five hours, and some methods run as long as 24.

Cold brew is not simply coffee poured over ice, nor coffee that has been chilled after brewing. It is extracted directly with cold water—or, in the ice-drip style, with water from melting ice.

Broadly speaking, cold brew falls into two families: slow-drip (ice drip) and immersion.

1. Ice Drip Coffee:

Slow-drip cold brew requires dedicated equipment.

A large glass vessel at the top holds ice. As it melts, the water falls drop by drop through the ground coffee, carrying the extracted coffee into the container below. The whole process takes three to five hours.

That long, slow timeframe is also why cafés tend to prepare only a limited batch of cold brew each day. On weekends or during a rush, you may miss out if you arrive late.

Ice-drip coffee generally calls for special gear. As the picture shows, the upper glass vessel is filled with ice cubes; meltwater drips slowly onto the coffee bed below, soaks through it, and drains out from the bottom. The full cycle runs at least three to five hours. That is why so many shops run out—come too late on a busy weekend and it's gone.

2. Immersion Cold Brew:

As the name suggests, you simply grind the beans and steep them in cold water. Room-temperature water works, but chilled water is better. All you need is an airtight glass container. Put the grounds at the bottom, pour cold water over them, and aim for a coffee-to-water ratio of about 1:8—though you can adjust freely to taste.

Seal the container and leave it at room temperature for 12 to 18 hours. You can refrigerate it instead, but the coffee will need more time to develop that intensity and pleasant balance.

When the time is up, filter the grounds out. Paper or cloth filters absorb the extracted coffee oils and strip away the oily mouthfeel, while a metal filter preserves more of the aroma.

So after steeping, strain the grounds out with the filter of your choice. Metal filters keep the extracted oils, so the cup carries a faintly oily quality. Filter paper or cloth soaks those oils up instead, and the flavor shifts accordingly.

Cold Brew Coffee Characteristics:

– Simple operation

– More time (12-18 hours, some say 24 hours in the refrigerator), time-consuming, usually 12-18 hours

– Very concentrated, thorough brewing extraction, rich flavor

Cold Brew Coffee Bean Selection Recommendations

Bean choice comes down to personal taste, and there are no strict rules—drink what you like. That said, FrontStreet Coffee suggests sun-dried or honey-processed beans: cold brew made from them tends to be sweeter and more crowd-pleasing.

FrontStreet Coffee uses [Hartman] and [Flower Queen] to build a cold brew with a rich fermentation aroma.

FrontStreet Coffee Recommendation

For a cold brew with real depth, FrontStreet's Strawberry Candy Geisha blend is a natural fit. It pairs Panama Geisha—delicate rose and orange—with a honey-processed Costa Rican coffee that brings grape, raisin and strawberry-marshmallow sweetness. Cold-brewed, it is bright and lively; given a little time to ferment and settle, it even takes on the character of fruit wine.

If you prefer floral, fruit-forward iced coffee, choose FrontStreet Huakui. Grown in Ethiopia and dried with the fruit still on the bean, it soaks up plenty of sweet aromatics; as cold brew it shows magnolia, cream strawberry, dried mango, guava and black tea. And if you want a fuller, juicier cup, FrontStreet Kenya Cherry Tomato brings cherry tomato, snow pear, black plum and smoked plum acidity that stands up beautifully to low-temperature extraction, with low bitterness and a long finish.