Troubleshooting
Why does my drink taste different every batch?
This is one of the most common calls we get, and it's rarely a mystery once someone independent looks at both the recipe and the process it's run through. Batch inconsistency almost always comes down to one of a small number of causes, but working out which one applies to you matters, because the fix is completely different depending on the answer.
Ingredient variability
Natural ingredients, real fruit, botanicals, tea, aren't identical from batch to batch the way synthetic flavourings are. A shift in ripeness, harvest, or supplier can quietly change a formulation's flavour without anyone changing a single line of the recipe. If your ingredients aren't tightly specified, this is often the first place to look.
Process drift at the co-packer
The same recipe can behave differently depending on how it's mixed, how long it dwells at a given temperature, how carbonation is dosed, or how thoroughly a line is cleaned between runs. None of this shows up in the recipe itself, it shows up in how faithfully the process follows it, run after run. This is usually invisible to a founder who isn't on-site, and it's exactly what independent QC at your co-packer is designed to catch.
A recipe that was never fully stabilised
Sometimes the underlying formulation simply wasn't robust enough to begin with, it worked once, under one set of conditions, but was never properly tested for how it holds up across different batches, temperatures, or storage times. In that case, no amount of process discipline at the co-packer will fully fix it, the recipe itself needs revisiting.
How to actually find out which one it is
This needs a technical review of both the formulation and the process it runs through, because the two interact and a symptom that looks like a recipe fault can just as easily be a process fault, and the other way round. An independent consultant with no stake in either the recipe or the production line is usually the fastest way to get a straight answer, rather than a co-packer telling you it's the recipe, or a recipe developer insisting it's the process.
What to do once you know
If it's ingredients, tighter specifications and supplier agreements usually solve it. If it's process, that's a conversation with the co-packer backed by evidence, not guesswork. If it's the recipe, it needs reformulating for stability before it goes anywhere near another production run. Knowing which one you're dealing with is most of the battle, guessing wrong wastes months. And if the diagnosis points to the relationship itself, our guide on finding the right co-packer covers what to look for next time.
Common questions
Is batch inconsistency usually the recipe's fault or the co-packer's?
It's genuinely split between the two, and sometimes it's both at once. The only reliable way to tell is a technical review of the formulation and the production process together, since the same recipe can behave differently depending on how faithfully it's run.
Can natural ingredients really cause this much variation?
Yes. Real fruit, botanicals, and other natural ingredients vary by harvest, ripeness, and supplier in ways synthetic flavourings don't, and small shifts can be noticeable in the finished product even when nothing about the recipe itself has changed.
Should I switch co-packers if my batches keep varying?
Not necessarily, and not before you know the actual cause. If it turns out to be the recipe, switching co-packers won't fix it. Get an independent diagnosis first, then decide whether the relationship is the problem or something else is.
Getting inconsistent results from your line?
Taste Right diagnoses whether it's the recipe, the process, or the partner, and gives you a plan to fix it, based in London, working across the UK.
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