Brewing Cold Brew Coffee Using Instant Coffee

Quick answer

• Yes, you can make a cold brew-style drink using instant coffee.
• It’s a quick and easy method for a smooth, less acidic coffee experience.
• The process involves dissolving instant coffee in cold water and letting it steep.
• You can adjust the strength by altering the coffee-to-water ratio.
• While not traditional cold brew, it offers similar flavor characteristics with much less time.
• Use good quality instant coffee for the best results.

Who this is for

• Busy individuals who want a quick, smooth coffee without a long brew time.
• Those who enjoy the taste of cold brew but don’t have a dedicated brewer or the patience for the traditional method.
• Anyone looking for a less acidic coffee option that can be prepared with minimal equipment.

What to check first

Brewer type and filter type

For this method, you won’t be using a traditional brewer or filter in the same way as hot coffee. The “brewer” is simply a container, and the “filter” is the inherent nature of instant coffee – it dissolves.

Water quality and temperature

Use cold, filtered water for the best taste. Tap water with strong mineral or chlorine flavors can negatively impact your final beverage. While the brewing temperature is cold, the water you start with should be clean and free of off-flavors.

Grind size and coffee freshness

Since you’re using instant coffee, grind size and coffee freshness are not applicable in the traditional sense. The key is the quality of the instant coffee granules themselves. Opt for a reputable brand known for good flavor.

Coffee-to-water ratio

This is crucial for achieving your desired strength. A common starting point is 1-2 tablespoons of instant coffee per 6-8 ounces of cold water. You’ll adjust this based on personal preference.

Cleanliness/descale status

Ensure your container (jar, pitcher, etc.) and any stirring utensils are thoroughly clean. Any residue from previous use can impart unwanted flavors. Since there are no heating elements or complex parts, descaling isn’t a concern for this method.

Step-by-step (brew workflow)

1. Gather your ingredients and tools: You’ll need instant coffee, cold filtered water, a clean jar or pitcher, and a spoon or whisk.

• What “good” looks like: Everything is clean and ready to go.
• Common mistake: Using a dirty container.
• How to avoid it: Wash your container and spoon thoroughly before starting.

2. Measure your instant coffee: Add your desired amount of instant coffee granules to the container. A good starting point is 1-2 tablespoons per 6-8 ounces of water.

• What “good” looks like: The correct amount of coffee is measured out.
• Common mistake: Eyeballing the amount, leading to inconsistent strength.
• How to avoid it: Use measuring spoons for accuracy.

3. Measure your cold water: Add the cold filtered water to the container.

• What “good” looks like: The correct amount of water is added.
• Common mistake: Using too much or too little water, resulting in a weak or overly strong brew.
• How to avoid it: Use a measuring cup to ensure the right water volume.

4. Stir to dissolve: Stir or whisk the mixture vigorously until all the instant coffee granules have dissolved.

• What “good” looks like: The water is completely clear, with no undissolved coffee particles.
• Common mistake: Not stirring enough, leaving undissolved coffee at the bottom.
• How to avoid it: Stir for at least 30-60 seconds, ensuring no clumps remain.

5. (Optional) Add sweetener or flavorings: If you prefer, you can add sugar, syrup, or other flavorings at this stage.

• What “good” looks like: Any additions are incorporated.
• Common mistake: Adding flavorings after chilling, which might not dissolve properly.
• How to avoid it: Add them while the coffee is still slightly warm from dissolving, or ensure they dissolve well in cold liquid.

6. Chill the mixture: Cover the container and place it in the refrigerator.

• What “good” looks like: The container is sealed and chilling.
• Common mistake: Leaving the container uncovered in the fridge, allowing it to absorb other odors.
• How to avoid it: Always use a lid or plastic wrap to seal the container.

7. Allow to steep/chill: Let the mixture chill for at least 4-8 hours, or preferably overnight. This allows the flavors to meld and the coffee to become smooth.

• What “good” looks like: The coffee is thoroughly chilled and has had time for flavors to develop.
• Common mistake: Drinking it too soon, resulting in a less developed and potentially bitter taste.
• How to avoid it: Plan ahead and let it steep for the recommended time.

8. Serve: Pour the cold brew-style coffee over ice.

• What “good” looks like: A smooth, cold beverage is ready to drink.
• Common mistake: Serving it warm or without ice, defeating the “cold brew” purpose.
• How to avoid it: Always serve over plenty of ice.

9. Add milk or cream (optional): Stir in your preferred amount of milk, cream, or non-dairy alternative.

• What “good” looks like: Your coffee is customized to your liking.
• Common mistake: Adding too much milk, diluting the flavor too much.
• How to avoid it: Add gradually and taste as you go.

10. Enjoy: Sip and savor your quickly prepared, smooth cold brew-style coffee.

• What “good” looks like: A refreshing and enjoyable coffee drink.
• Common mistake: Rushing the enjoyment.
• How to avoid it: Take a moment to appreciate the convenience and taste.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Using tap water with off-flavors	Metallic, chlorinated, or mineral-heavy taste in coffee.	Use filtered or bottled water.
Not dissolving instant coffee completely	Gritty texture, undissolved coffee sludge at the bottom.	Stir vigorously for at least 30-60 seconds until fully dissolved.
Insufficient steeping/chilling time	Weak flavor, less smooth mouthfeel, not fully chilled.	Steep for at least 4-8 hours, preferably overnight.
Using too much or too little instant coffee	Overly bitter/strong or weak/watery coffee.	Start with a 1-2 tbsp per 6-8 oz ratio and adjust to your taste.
Using a dirty container	Unpleasant, stale, or off-flavors in the final coffee.	Wash all equipment thoroughly with soap and water before use.
Not covering the container in the fridge	Coffee absorbs odors from other food items.	Seal the container tightly with a lid or plastic wrap.
Adding sweetener before dissolving coffee	Sweetener may not dissolve properly in cold water.	Add sweeteners after the coffee is dissolved, or dissolve them in a small amount of hot water first.
Serving without ice	The coffee will be lukewarm, not cold and refreshing.	Always serve over plenty of ice.
Using low-quality instant coffee	Flat, bland, or even bitter coffee taste.	Opt for a reputable brand known for good flavor and aroma.
Over-stirring after chilling	Can introduce too much air, leading to a slightly less smooth texture.	Stir gently when serving or adding milk/cream.

Decision rules (simple if/then)

• If you prefer a stronger coffee, then add more instant coffee granules because this directly increases the coffee concentration.
• If you find the coffee too bitter, then reduce the amount of instant coffee or try a different brand because some instant coffees are naturally more bitter.
• If you want a smoother taste, then ensure you’ve dissolved the coffee completely and allowed it to steep for at least 8 hours because thorough dissolution and adequate chilling time contribute to smoothness.
• If you’re short on time, then you can drink it after 1-2 hours of chilling, but understand the flavor will be less developed because longer steeping allows flavors to meld.
• If you want to make a larger batch, then scale up your instant coffee and water quantities proportionally because consistency is key.
• If your coffee tastes “off,” then check the freshness of your instant coffee and the cleanliness of your container because these are the primary flavor contributors.
• If you want to make it cold foam-style, then shake vigorously with ice and a little milk before straining (if you used any non-dissolving additives) because the aeration creates foam.
• If you want to avoid a gritty texture, then stir until absolutely no granules are visible before chilling because undissolved particles will remain.
• If you find the coffee too acidic, then this method is a good choice because instant coffee generally has lower perceived acidity than brewed coffee.
• If you’re adding milk or cream, then add it after chilling for best results because adding it during the steeping process might alter the flavor development.

FAQ

Can I use decaf instant coffee?

Yes, you can absolutely use decaf instant coffee to make a cold brew-style drink. The process remains the same, allowing you to enjoy a smooth, less caffeinated beverage.

How long does this “cold brew” last?

This instant coffee mixture can be stored in the refrigerator for about 3-4 days. Ensure it’s kept in a sealed container to maintain freshness and prevent odor absorption.

Is this the same as traditional cold brew?

No, this is a cold brew-style drink made with instant coffee. Traditional cold brew involves steeping coffee grounds in cold water for 12-24 hours, which extracts different flavor compounds. This method offers a similar smooth, less acidic profile much more quickly.

What kind of instant coffee is best?

For the best flavor, opt for a high-quality instant coffee. Look for brands that are known for good taste and aroma, often labeled as “premium” or “specialty” instant coffee.

Can I adjust the strength after it’s made?

Yes, you can adjust the strength by adding more water if it’s too strong, or by making a fresh, stronger batch and combining them if it’s too weak. You can also add more instant coffee to a small portion of the chilled liquid to create a concentrated mix to add to your existing batch.

Why is it less acidic?

Instant coffee, due to its manufacturing process, generally has a different chemical composition than freshly brewed coffee. This often results in a perceived lower acidity and a smoother taste, which is one of the benefits often associated with cold brewing.

Can I use hot water to dissolve the instant coffee faster?

While you can use a small amount of hot water to dissolve the instant coffee more quickly before adding cold water and chilling, be cautious not to use too much, as this can alter the intended cold steeping process and flavor profile. It’s generally best to stick to cold water for the full cold brew experience.

What this page does NOT cover (and where to go next)

• Detailed comparison of instant coffee brands: For specific taste profiles, research individual instant coffee reviews.
• The science of coffee extraction: If you’re interested in the chemical compounds extracted during brewing.
• Advanced cold brew techniques: Such as using specific grind sizes or bloom phases with coffee grounds.
• Equipment reviews for traditional cold brewers: If you decide to invest in dedicated cold brew equipment.