Keep the physical purchase unit
No. Assembly’s selected offer is one 3 Lconcentrate box. Its approximately 60 serves statement does not turn the purchase into 60 individually packaged drinks or guarantee that every buyer will make the same serving. The approximation should remain visible.
Do not reverse-engineer a portion rule
Dividing net volume by an approximate count does not establish a prescribed portion or a verified measure for an individual. It also does not provide caffeine milligrams,nutritional energy or a number of days of use. Those are separate questions with different evidence requirements.
Different makers define serves differently
Origin’s 40 mlsource preparation amount should not be merged with Assembly’s serve estimate to create a common cost per equal drink. Tesco’s incomplete preparation panel adds another unresolved scope. A precise-looking serve ranking would hide those differences.
Use your own stock target
Use whole offers or declared net millilitres for a matching-stock calculation. Choose the target yourself without a daily-intake assumption. The tool rounds the purchase unit and shows surplus;it does not prescribe cups per day or predict when a household will run out.
Apply the field to a purchase
A serve estimate rounded by the maker should stay approximate. Reverse-engineering a precise millilitre dose from it would add an instruction that the source did not actually establish for an individual consumer.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent food/nutrition/content/commerce review remain pending.
Tesco UK Finest Unsweetened Cold Brew500ml product320664024 ↗
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