How to Make No-Brew Coffee Taste Better: 7 Easy Fixes

Last updated: 10 October 2026

If your no-brew coffee tastes flat or weak, the cause is usually small: too much water, not enough ice, or not enough stirring. Here are seven fixes.

1. Follow the numbers on the pack

We tried different coffee-to-water amounts for each Ten15 drink before settling on the ones printed on the pack. If your cup tastes weak, you've probably added too much. If it's too sharp, too little. Start here, then adjust.

Weigh the water once with a kitchen scale and mark where it comes to in your favourite mug.

2. Match the water to the drink

Espresso wants hot water. The lattes want warm. Water that's too cool can leave the milky mixes clumpy. Use the temperature the pack asks for.

3. Treat ice as an ingredient, not an afterthought

That 85 g or 110 g of ice isn't decoration. It's part of the recipe. It chills the drink and gives it the right dilution. Skip it or swap it for a few small cubes and your iced latte turns out stronger and sweeter than intended. Use clean, plain ice, because everything it's frozen with ends up in your cup.

4. Mix for longer than you think

Lattes say "mix until smooth" for a reason. Stir for a few extra seconds, scraping the bottom of the cup, until you can't see any powder. A small whisk, a handheld frother or a jar with a lid shaken hard all work. This one change fixes most "my coffee tastes thin" complaints.

5. Warm the cup first

For hot drinks, rinse your mug with hot water before you start. It takes ten seconds, and your latte stays warm for longer, which is the difference between a drink you finish and one that's cold at the bottom.

6. Turn your Espresso into something bigger

Espresso is a black, concentrated base, so it's the easiest drink to customise. Make it with 120 ml cold water, pour it over ice, then top with cold milk for a quick iced latte. Add a spoon of sugar or syrup if you like it sweet. Want to go further? Our iced latte guide walks you through it.

7. Adjust the water, not the serving

If you like your coffee stronger, use a little less water. If you like it gentler, use a little more. Change in 20 ml steps and write down what you like. Once you find the amount you like, use it every time.

Three mistakes to skip

• Eyeballing the water. It's the number one reason a good sachet tastes average.
• Using a tiny cup for a frappe. Blend it properly in a jug or blender; a glass with a spoon won't give you the frosty, creamy texture.
• Leaving sachets open or in a damp spot. Keep them sealed and dry, and they'll be ready whenever you are.

Not sure which drink to start with?

If you like bold and black, go for the freeze-dried Americano or Espresso, and read Espresso vs Americano to pick. If you prefer creamy and sweet, try a latte or frappe. Curious about why freeze-dried tastes different at all? Here's what freeze-dried coffee actually is.

Frequently asked questions

Why does my coffee taste weak? Usually it's too much water. Go back to the amounts on the pack, then reduce the water by 20 ml at a time until it suits you.

Can I make Espresso with cold water? Yes. The pack says 120 ml cold water, with 85 g ice for an iced version. It dissolves in cold water, so you don't need a kettle.

Do I need a blender for the frappe? For the frosty café texture, yes. Blend one sachet with 75 ml milk and 110 g ice for 20–30 seconds, as on the pack.

Is Ten15 Espresso just coffee? The product page lists it as freeze-dried cold brew coffee, with no sugar, no creamer and no flavouring added.

Where do I start if I've never tried it? The Starter Pack is built for exactly that: a bit of everything, so you can find your favourite.

Try them all

Not sure which one will be your cup? Try the Starter Pack — 50% off, or shop all Ten15 coffee.

Try the Starter Pack — 50% Off

Keep reading: What Is Freeze-Dried Coffee and Espresso vs Americano.

— Rabia Popatya, Founder, Ten15