Simple Cold Brew Coffee Made From Instant Coffee

Quick answer

• Use a 1:4 to 1:8 ratio of instant coffee to water.
• Stir well to dissolve the instant coffee completely.
• Refrigerate for at least 12-24 hours.
• Strain if you used any whole coffee beans (unlikely with instant, but good habit).
• Dilute with water or milk to taste.
• It’s that easy. Seriously.

Who this is for

• You’re short on time but crave cold brew.
• You have instant coffee lying around and want to use it.
• You’re new to cold brew and want the simplest possible entry.

What to check first

Brewer type and filter type

For instant coffee cold brew, you don’t really need a fancy brewer. A simple jar or pitcher will do. No special filters are usually required unless you add something weird.

Water quality and temperature

Tap water is fine for most folks. If yours tastes funky, filtered water is your friend. You’ll be using cold water straight from the tap or fridge. No need for fancy temps here.

Grind size and coffee freshness

Instant coffee is already ground, so you’re good. Freshness isn’t as big a deal with instant as it is with whole beans, but try to use stuff that hasn’t been open for a decade.

Coffee-to-water ratio

This is key. Start with a ratio of 1:4 (one part instant coffee to four parts water) for a strong concentrate. You can go as high as 1:8 if you want something less intense from the get-go. I usually aim for 1:5.

Cleanliness/descale status

Make sure your jar or pitcher is clean. You don’t want yesterday’s spaghetti sauce ruining your morning coffee. No descaling needed for simple jars.

Step-by-step (how to make cold brew out of instant coffee)

1. Gather your supplies: Grab a clean jar or pitcher, your instant coffee, and cold water.

• What “good” looks like: Everything is ready to go. No scrambling.
• Common mistake: Realizing you’re out of coffee after you’ve started. Double-check your stash.

2. Measure your instant coffee: Decide on your ratio. For a concentrate, use about 1/4 cup of instant coffee for every cup of water.

• What “good” looks like: The right amount of coffee measured out.
• Common mistake: Eyeballing it and ending up with coffee too strong or too weak. Use a measuring cup.

To ensure you get the perfect coffee-to-water ratio, using a good set of measuring cups is essential. This helps avoid common mistakes like coffee that’s too strong or too weak.

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3. Measure your water: Add the corresponding amount of cold water to your container.

• What “good” looks like: The right amount of water is in the container.
• Common mistake: Adding too much or too little water, messing up your ratio. Be precise.

4. Combine coffee and water: Pour the measured instant coffee into the water.

• What “good” looks like: All the coffee grounds are in the water.
• Common mistake: Spilling some coffee on the counter. Go slow.

5. Stir thoroughly: Stir until all the instant coffee granules are completely dissolved. This might take a minute or two.

• What “good” looks like: No dry coffee powder at the bottom. It should look like regular brewed coffee, just cold.
• Common mistake: Not stirring enough, leaving undissolved coffee sludge. Keep stirring until it’s smooth.

6. Cover and refrigerate: Put a lid on your jar or cover your pitcher. Place it in the refrigerator.

• What “good” looks like: Your container is sealed and chilling.
• Common mistake: Leaving it uncovered, letting it absorb fridge odors. A tight seal is important.

7. Let it brew: Allow the mixture to steep in the fridge for at least 12 hours, but 24 hours is even better.

• What “good” looks like: Time is passing, and the flavors are melding.
• Common mistake: Impatience. Seriously, the longer it sits, the better it gets. Don’t peek too early.

8. Strain (optional but recommended): Even though instant coffee dissolves, some fine sediment might remain. Pour the cold brew through a fine-mesh sieve or a coffee filter into another clean container.

• What “good” looks like: A clear, smooth liquid.
• Common mistake: Skipping this step and getting gritty coffee. A little effort here pays off.

9. Dilute to taste: This is your concentrate. It’s strong. Pour some into a glass and add cold water, milk, or your favorite non-dairy alternative. Start with a 1:1 ratio of concentrate to diluent and adjust.

• What “good” looks like: A perfectly balanced, refreshing drink.
• Common mistake: Drinking the concentrate straight. It’s like drinking espresso without diluting it. You’ll regret it.

10. Serve and enjoy: Add ice, and savor your homemade instant coffee cold brew.

• What “good” looks like: A delicious, chilled coffee beverage.
• Common mistake: Not making enough for the next day. You’ll wish you had.

Common mistakes (and what happens if you ignore them)

Decision rules (simple if/then)

• If your instant coffee tastes bitter, then use a higher water-to-coffee ratio (e.g., 1:6 or 1:8) because it’s too concentrated.
• If your cold brew tastes weak, then use less water next time or let it steep for an extra 12 hours because it needs more coffee or more time to extract flavor.
• If you want a stronger coffee kick, then use a 1:4 ratio and dilute less later because you’re building a potent base.
• If you prefer a milder taste, then use a 1:8 ratio and dilute more because you want a lighter flavor profile from the start.
• If you notice sediment after brewing, then strain it through a fine-mesh sieve or coffee filter because it will give you a cleaner mouthfeel.
• If your fridge smells like onions, then make sure your cold brew container is sealed tightly because odors can transfer.
• If you’re in a hurry, then stick to the 12-hour minimum steep time because it’s better than nothing, but 24 hours is ideal.
• If you want to experiment with flavor, then consider adding a cinnamon stick or a vanilla bean to the jar while it steeps because it can impart subtle notes.
• If you’re sensitive to caffeine, then dilute your final drink more than usual because cold brew, even from instant, can pack a punch.
• If you have leftover concentrate, then store it in an airtight container in the fridge for up to a week because it stays good for a while.

FAQ

Can I really use any instant coffee?

Yep, pretty much. The quality of the instant coffee will affect the final taste, but any standard instant coffee will work for basic cold brew.

How long does instant coffee cold brew last?

Stored in an airtight container in the fridge, your concentrate should be good for about a week. The diluted drink is best consumed within a day or two.

Is instant coffee cold brew healthier than regular coffee?

Cold brew in general is often less acidic than hot brewed coffee, which some people find easier on their stomach. The health benefits are similar, with caffeine being the main active component.

What’s the difference between instant coffee cold brew and regular cold brew?

Regular cold brew uses ground coffee beans steeped in water. Instant coffee cold brew uses pre-brewed, dehydrated coffee crystals that dissolve in water. It’s a shortcut that skips the grinding and steeping of actual grounds.

Can I add milk or creamer to my instant coffee cold brew?

Absolutely. Dilute your concentrate with water or milk, then add creamer, sugar, or any other additions you like. It’s your coffee, after all.

Why does it taste bitter sometimes?

Bitterness can come from a ratio that’s too strong (too much coffee, not enough water), not steeping long enough, or using lower-quality instant coffee. Adjusting your ratio and steeping time are the first steps.

Do I need special equipment?

Nope. A simple jar or pitcher, measuring cups, and a spoon are all you need to get started. If you want it super smooth, a fine-mesh sieve or coffee filter is helpful.

Can I make hot coffee from this instant cold brew concentrate?

You could, but it’s not really the point. You’d be heating up a pre-brewed liquid. It’s designed to be a cold, refreshing drink.

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

• Detailed comparisons of different instant coffee brands. (Next: Explore specialty instant coffee options or read reviews.)
• Advanced flavor infusion techniques beyond simple additions. (Next: Research cold brew flavor recipes and techniques.)
• The science of coffee extraction for hot brewing. (Next: Look into the principles of hot coffee brewing methods.)
• Specific recommendations for milk alternatives or sweeteners. (Next: Explore resources on coffee pairing and flavor profiles.)
• The history of instant coffee or cold brew. (Next: Dive into coffee history articles or documentaries.)