How Much Protein Should You Add to Your Coffee?
Most people use too much, and the reason is simple: they use the scoop that came with the tub.
That scoop was sized for a 300–400 ml shake mixed with milk. A standard iced coffee is 250 ml and already has coffee in it. Same scoop, very different result.
Start with the ratio, not the scoop
A workable rule for texture: roughly 10 g of protein per 200 ml of coffee.
| Coffee volume | Protein | Result |
|---|---|---|
| 200 ml | 10 g | Light, coffee-forward |
| 250 ml | 10–15 g | Balanced |
| 350 ml | 15–20 g | Creamy, more shake-like |
| 250 ml | 25–30 g | Thick, chalky, usually unpleasant |
That last row is what a full standard scoop gives you in a normal-sized coffee, and it's why so many first attempts get abandoned.
Then adjust for your goal
Just want protein in your morning? 10–15 g. Drinks like coffee, adds meaningful protein.
Using it as breakfast? 20–25 g, in a larger volume. Closer to a meal, and you'll want the extra liquid to keep it drinkable.
Post-workout? 25–30 g of a complete protein — but a coffee is a poor vehicle for that much. A shake is the better tool. More on why in our muscle article.
Keeping the coffee taste? 10 g or less. Every gram of protein mutes more coffee aroma.
Build up, don't start high
Two reasons.
Digestive. A large protein dose on an empty stomach causes bloating for some people. Starting lower and increasing lets you find your own limit.
Palatability. It's far easier to add more than to rescue a drink that's already too thick.
Practical notes
Measure by grams of protein, not scoops. Scoops differ enormously between products, and a 30 g scoop of powder is not 30 g of protein — typically 20–25 g depending on the formulation. The label tells you.
More liquid fixes most problems. Too thick, too chalky, too intense — add liquid before concluding the product is bad.
Ice is not liquid. It becomes liquid, which is why drinks get watery. Account for it.
Split it if you need more. Two 10 g servings across the morning is easier on the stomach and on the taste than one 20 g hit.
Frequently asked questions
How much protein powder should I put in coffee? Around 10 g of protein per 200 ml is a good starting ratio. A full standard scoop in a normal coffee is usually too much.
Can I put a whole scoop in my coffee? You can, but in a 250 ml coffee it's typically thick and chalky. Use more liquid or less powder.
Is 10 g of protein enough? For adding protein to your morning, yes — one trial found 10 g pre-meal reduced next-meal intake by 9.4%. For maximally stimulating muscle protein synthesis, no.
Why is my protein coffee too thick? Too much powder for the volume. Add liquid.
Should I use more if I'm skipping breakfast? 20–25 g in a larger volume is reasonable, ideally with something containing fibre alongside.
Does more protein mean better results? Not past roughly 25–40 g in a sitting. Beyond that the extra isn't doing more for satiety or muscle.
Where Franky fits
Franky Protein Iced Coffee is 10 g of protein per scoop, and the scoop is sized for the drink rather than borrowed from a shake tub.
One scoop in a standard iced coffee gives you the coffee-forward, 10 g version. Two scoops gives you 20 g and a creamier drink — closer to breakfast. That's the whole dosing decision, and both work.
It's also why we print the per-scoop number rather than per-serving ambiguity: so you can actually do the arithmetic above.
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
