Cold-chain from Osaka: how we get a brown bottle to your door
An operations post on why temperature-controlled air freight matters for B-vitamin stability, how the reservation math actually works, and what a single shipment looks like.
By YOAKE editorial
Most DTC brands don't publish their logistics. We will, because our logistics are the pitch — "flown cold-chain from Osaka" is the differentiator, and we think it is the kind of operational story worth documenting in public rather than hiding behind brand copy.
Here is how a shipment actually happens.
Step 1 — Commitment
The reservation window opens Monday morning JST and closes Sunday at 23:59 JST. During the window, customers reserve packs and we authorize their cards through Stripe. Nothing is captured. The number ticks up on the homepage in real time — baseline 23, plus live commitments from Airtable.
Our minimum to fire the shipment is 150 full-shelf equivalents. That number is derived from the cold-chain air freight slot we book through Japan Airlines Cargo. Below 150, the shipment is cost-negative per bottle even at full retail pricing. Above 150, freight cost amortizes down to roughly $4 per bottle and the unit economics work.
If we hit 150, we capture the authorizations Monday morning and go.
If we don't, every authorization is voided. The window re-opens the following Monday. We post on the journal about why — overshoot demand, bad timing, a competitor launch — and iterate.
Step 2 — Osaka consolidation
Our Japan-side fulfillment partner is a freight forwarder with a temperature-controlled warehouse in Higashi-Osaka. We've been buying from them at smaller quantities for months to test their pack quality — they know our SKUs, they have standing wholesale relationships with all four manufacturers (Zeria, House Foods, Kobayashi, Taisho), and they can hand-pack a 150-unit shipment in one Monday morning.
Monday local time, our partner pulls the purchase order from us (quantity by SKU), confirms inventory against their Osaka stockroom, and cuts the air waybill. Boxes stack on a pallet in the warehouse cooler at 4°C until the truck arrives for KIX (Kansai International Airport).
Step 3 — Why cold-chain
The technical reason: B vitamins (particularly B₁ and B₂) are temperature-sensitive. Some of them degrade measurably at warehouse ambient temperatures of 30–35°C. Standard ocean-freight transit from Osaka to LAX is 14–21 days — plenty of time for degradation without temperature control.
Cold-chain air freight keeps the pallet at 2–8°C throughout. Transit time drops from 14–21 days to 2–3 days. Every bottle is within its best-before window by a wide margin when it reaches the US 3PL.
The soft reason: cold-chain also signals rigor. A brand willing to pay cold-chain rates to move a $10/bottle product is a brand that cares about the ingredient quality. That signal is part of the point.
Step 4 — US customs, 3PL, and overlabel
Pallet lands at LAX on Tuesday evening local time. We clear customs Wednesday morning (FDA requires prior notice for dietary supplement imports, filed pre-departure).
The pallet moves to our Los Angeles 3PL, where each retail pack gets an English FDA structure/function overlabel applied. That is the only physical modification to the product — the Japanese box is not opened, the bottles are not decanted, the lot numbers and best-before dates remain visible. The overlabel is required for US retail sale of imported dietary supplements.
Packs go into individual customer shipping boxes with insulation and a small print insert.
Step 5 — Your door
Customer shipments leave the 3PL on Wednesday. Delivery is Thursday for West Coast, Friday for most of the rest of continental US. Tracking goes out by email as soon as the label prints.
The whole loop — Sunday window close, Thursday delivery — is four days. That is faster than most US DTC supplements that are sitting in a domestic warehouse; the cold-chain freight doesn't slow the delivery, it substitutes for the warehouse-to-shelf portion of an ordinary supply chain.
What we publish
Every shipment's manifest (quantity by SKU), air waybill number, and KIX-warehouse cold-chain log is posted on the homepage archive by the Friday after it leaves. Even for shipments that have problems — customs delay, dropped temperature read, pallet damage — we publish the log.
This is a better accountability mechanism than any marketing language about "transparency," because it's falsifiable. A customer who wants to verify that their bottle actually came off the flight we said it did can check the waybill against our archive entry.
If you are reserving the first drop, we'll see you on Thursday.