The front of a can is advertising. The back is the contract. Once you can read the panel, no slogan can talk you into anything — so here's how, using our own COCOFUEL label as the worked example.
1. Start with the ingredient order
Ingredients are listed by weight, most first. That single rule tells you what a drink actually is. If plain water leads the list, that's a water-based drink no matter what the front says. On our panel the first ingredient is Carbonated Coconut Water — which is the whole point: it's the base, not a splash near the bottom.
Read the first three ingredients and you already know most of what you need to.
2. A claim on the front should be a line on the back
This is the single most useful habit you can build. Any time the front of a can makes a claim, turn it over and look for the matching entry — an ingredient in the list, or a figure on the nutrition panel. If the claim is real, it will be there in black and white.
- A functional ingredient named on the front should appear in the ingredient list, in list order.
- Anything quantified on the front — milligrams, grams, percentages — should appear as a number on the panel.
- Vague collective nouns are the tell. "Electrolytes", "vitamins", "botanicals" with no figures behind them aren't much of a promise.
Run that test on our can and you should find every front-of-pack word accounted for on the back. Run it on the next can you pick up, too — that's the point of the exercise.
3. Read the functional lines, not just the headline one
Most people find the caffeine figure and stop. The panel usually has more on it worth knowing. On ours you'll find prebiotic fibre 5g and taurine 500mg declared as their own lines, with their own numbers, rather than folded into a blend with a trademark name.
That's the distinction to watch for. A proprietary blend gives you one total for several ingredients, so you can't tell how much of each you're getting. Separate, numbered lines tell you exactly. When a panel itemises, you can compare it to the next can; when it blends, you can't.
Before you trust any number, check the serving size at the top of the panel. Some drinks quote figures "per 100mL" or split a big can into two serves, which quietly halves every number. Ours is simple: 1 serve = 500mL = the whole can, so every figure on the panel is what you actually drink.
4. Make sense of the electrolyte numbers
Electrolytes are just minerals shown in milligrams. On our panel you'll see sodium 176mg and potassium 400mg. A few honest pointers:
- Bigger isn't automatically better — the numbers are only meaningful next to what a drink is for.
- Check that a claimed electrolyte actually appears with a number. "Electrolytes" on the front with no figures on the back isn't much of a promise.
- Sodium and potassium are the two you lose most through sweat, which is why they're the ones we call out under hydration.
5. Find the caffeine figure — and the vitamins
Caffeine is listed in milligrams per serve; ours is 150mg, or 30mg per 100mL. If a can only says "contains caffeine" with no number, that's worth a raised eyebrow. Vitamins are sometimes shown with a % RDI — recommended dietary intake — which helps you see how a figure like our vitamin C 75mg fits into a day.
The one-minute version
Turn the can around. Read the first three ingredients. Check the serving size. Match every front-of-pack claim to a line on the back. Find the caffeine number. That's the whole skill — and it works on our can as well as anyone else's, which is exactly how it should be.
A panel that reads clean
See the full COCOFUEL label and nutrition panel for yourself, then reserve the first batch.
Read the label