A cold brew Greek frappe at home comes together by whisking 30ml of cold brew concentrate with 150ml of chilled milk or water and a handful of ice until a thick foam cap forms, then topping the glass with more ice. The whole process takes under 5 minutes in 2026, and it skips the clumping problem that plagues instant Nescafe frappe, because concentrate is already extracted at a 1:5 to 1:6 strength and dissolves into cold liquid instantly instead of sitting on top in granules.
- Cold brew concentrate makes a Greek-style frappe in under 5 minutes using a 1:5 ratio.
- 30ml of concentrate plus 150ml milk or water whisks into foam without instant-coffee clumping.
- A 1L bottle of Cold Brew Collective Coffee Concentrate covers roughly 30 glasses at 30ml a pour.
- Sweeten with Greek forest honey instead of sugar syrup for a heritage-style frappe in 2026.
Why this matters
Most Australian home cooks still make frappe the 1957 way: two teaspoons of instant coffee, two teaspoons of sugar, a splash of water, shaken hard in a shaker or blitzed with a milk frother until foam forms. It works, but it is fiddly, it needs the right instant coffee brand, and it never quite matches what you get from a Greek coffee brand built for the drink.
Cold brew concentrate changes the mechanics. It is already coffee, already strong, already cold-extracted over roughly 16-24 hours, so there is no granule to dissolve and no bitterness spike from hot extraction hitting ice. You control the strength by adjusting how much water or milk you add, the same way you would dilute a cordial, and in 2026 that flexibility is the main reason home baristas are switching over.
How do you make a cold brew Greek frappe at home?
- Pour 30ml of cold brew concentrate into a shaker, jar with a lid, or the base of a milk frother.
- Add a small splash of cold water (about 20ml) if you want extra foam volume — this is the trick baristas use, since foam builds better with a bit of thin liquid before the milk goes in.
- Shake or froth for 20-30 seconds until the surface holds a thick, stable foam cap roughly 2-3cm deep.
- Fill a tall glass with ice, then pour the frothed concentrate over the top so the foam sits on the ice, not under it.
- Top with 150ml of chilled milk or water, poured slowly down the side of the glass so the foam layer stays intact.
- Add a straw and sweetener now, since stirring sugar or honey into concentrate before frothing flattens the foam.
Skip the blender if you don't have one — a jar with a tight lid, shaken hard for 30 seconds, produces the same foam as a stick blender or milk frother. The foam is air trapped in coffee oils, not a machine-only effect.
Classic instant frappe: 2 teaspoons per glass
The traditional method uses 2 teaspoons of instant coffee, 2 teaspoons of sugar, and 1-2 tablespoons of cold water, shaken hard until it turns pale and foamy, then poured over ice and topped with water or milk. It is the version most Cypriot and Greek households grew up with, and it still works fine if instant coffee is what's in the pantry. Verdict: Hold — keep this method if you already have instant coffee on hand, but it's harder to get a stable foam cap and the flavour is thinner than a proper extraction.
Cold brew concentrate frappe: 1:5 dilution ratio
Using 30ml of concentrate diluted at roughly 1:5 with milk or water gives a stronger, rounder coffee flavour than instant, because the concentrate was extracted from real ground coffee over many hours rather than spray-dried. It also foams faster since there's no undissolved powder weighing the bubbles down. Verdict: Buy — this is the better method for anyone making frappe more than once a week, and it's the version this guide is built around.
| Method | Coffee used per glass | Prep time | Foam quality |
|---|---|---|---|
| Instant Nescafe frappe | 2 tsp instant coffee | 3-4 min | Inconsistent, needs vigorous shaking |
| Cold brew concentrate frappe | 30ml concentrate | Under 5 min | Consistent, foams on contact with air |
If you want the third option — brewed hot and cooled rather than cold-extracted — the traditional briki method gives a different, thicker-bodied result better suited to a sit-down Greek coffee than an iced frappe.
Why the ratio of cold brew concentrate to milk varies
- Concentrate strength differs by brand — some are brewed at 1:4, others closer to 1:8, so check the label before assuming 30ml is right.
- Milk vs water changes the dilution math — milk carries more body, so you can use slightly less concentrate for the same perceived strength.
- Ice melt dilutes the drink over time, which is why Greek frappe is traditionally drunk slowly with a straw rather than gulped.
- Sweetener choice affects strength perception — Mount Olympus forest honey reads sweeter per teaspoon than white sugar, so less is needed.
- Foam density depends on shake time, not concentrate amount — a longer shake builds more foam without changing the coffee-to-liquid ratio.
- Personal taste for bitterness — some households in 2026 still prefer the sharper edge of a 1:4 ratio over the smoother 1:6.
“If the foam collapses in under a minute, the concentrate was diluted too far before shaking.”
A 1L bottle at A$30 covers roughly 30 frappes at 30ml a glass, which is worth doing the maths on if instant coffee jars are running you close to that per month already. The 2L bottle at A$55 works out to a lower per-glass cost for a household making frappe most days through an Australian summer.
Is cold brew concentrate the same as Greek frappe coffee?
No — cold brew concentrate is a cold-extracted coffee base, while a Greek frappe is the finished iced drink traditionally made with instant coffee, sugar and water shaken into foam. Concentrate is simply a faster, less finicky way to build the same foam-topped iced drink without the granules.
How much cold brew concentrate do I need per frappe?
30ml of cold brew concentrate per glass is the standard starting point, diluted with 150ml of milk or water at roughly a 1:5 ratio. Adjust up to 40ml for a stronger cup or down to 20ml for something closer to a light iced coffee.
Can I make a cold brew frappe without a blender?
Yes — a jar with a tight lid, shaken hard for 20-30 seconds, produces the same foam cap as a stick blender or electric frother. The foam comes from trapped air in the coffee, not from the type of equipment used.
FAQ
What's the best cold brew concentrate for a Greek frappe?
A concentrate brewed at roughly a 1:5 strength, like Cold Brew Collective Coffee Concentrate, works best because it dilutes cleanly with milk or water without needing extra sugar to balance bitterness.
How much cold brew concentrate do I need per frappe?
30ml of cold brew concentrate per glass is the standard amount, topped with about 150ml of milk or water. Increase to 40ml for a stronger frappe or reduce to 20ml for a milder iced coffee style.
Is cold brew concentrate the same as instant Nescafe frappe?
No. Instant Nescafe frappe is made by shaking 2 teaspoons of instant coffee granules with sugar and water, while cold brew concentrate is a pre-extracted liquid coffee base that dissolves instantly and foams faster.
Can I make a Greek frappe without a blender using cold brew concentrate?
Yes, a jar with a tight lid shaken hard for 20-30 seconds builds the same foam cap as a blender or frother. The foam comes from trapped air, not the equipment.
How long does cold brew concentrate last in the fridge?
Check the specific product label for its use-by date, since cold brew concentrates vary by brand and bottling method. Store it sealed and chilled once opened.
Should I sweeten a cold brew frappe with sugar or honey?
Either works, but honey like Mount Olympus forest honey dissolves into cold liquid less readily than sugar syrup, so stir it into a small amount of warm water first before adding to the concentrate.
Is cold brew concentrate stronger than regular brewed coffee?
Yes, cold brew concentrate is designed to be diluted, typically at a 1:5 to 1:6 ratio, which means it starts far stronger than a standard brewed cup before you add water or milk.
One last thing
The foam is the part most people get wrong in 2026 — they add the milk or water before shaking, which weighs down the bubbles before they form. Shake the concentrate alone first, get the foam cap standing on its own, then pour milk down the side of the glass underneath it. That single order-of-operations change is the difference between a flat iced coffee and an actual Greek frappe.