What's the Best Plastic Cup Size for Cold Brew to Go? 24 oz
A coffee shop owner ordered cups from me last year. He was just starting cold brew and wasn't sure what size to use. I asked how many cold brews he sold per day. He said 50-60 in summer. I asked what size customers ordered most. He said 16 oz. I asked if he had tried offering 24 oz. He said no — he was worried it wouldn't sell.
I told him to bring in a batch of 24 oz and try it. A month later, he told me: 24 oz became his top-selling cold brew size. It outsold 16 oz by 30%.
You don't need to guess. The data already tells you the answer.
Three Data Points That Point to 24 oz
| Data Point | What It Means |
|---|---|
| 62% of US cold brew consumers buy the largest size available | Give them a large cup. They'll pay more. |
| FDA says a serving is 12 oz, but the market has moved to 32-48 oz | Customers want way more than "standard" |
| 24 oz is exactly 2 FDA servings | Satisfying, but doesn't feel like "too much" |
Size comparison:
| Size | FDA Servings | Best For | Market Trend |
|---|---|---|---|
| 12 oz | 1 serving | Traditional iced coffee | Declining in cold brew |
| 16 oz | 1.3 servings | Standard medium | Stable, not growing |
| 24 oz | 2 servings | Individual indulgence | Growing fast |
| 32 oz+ | 2.7+ servings | Sharing / viral novelty | Niche |
Why 24 oz Wins
1. It Matches What People Actually Drink
The FDA says a single serving of cold brew is 12 oz. In reality, almost no one stops at 12 oz.
A federal judge dismissed a class action lawsuit against Starbucks precisely because she ruled that "the average consumer would NOT associate the FDA's serving size with serving sizes in everyday life."
62% of cold brew drinkers buy the largest size available. For most adults, a satisfying cold brew portion is between 16 oz and 24 oz. 12 oz feels like a "sip." 32 oz feels like a "commitment." At 24 oz, you get two full FDA servings — enough to satisfy without overwhelming.
2. The "Coffee Bucket" Trend Shows the Ceiling
In 2025-2026, a viral trend hit the US: the "coffee bucket." Dunkin' tested a 48 oz cold brew bucket with a handle and lid. Independent cafes followed with 32-50 oz versions.
But here's what the data shows:
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Dunkin's 48 oz bucket sold for $8.89. Customers quickly did the math: one bucket costs as much as two 32 oz iced coffees.
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Four shots of espresso (standard in most coffee buckets) contain about 250mg of caffeine — within the FDA's 400mg daily limit, but you're close if you drink anything else that day.
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Happy, a ready-to-drink coffee brand, launched a 48 oz cold brew bottle explicitly marketed as "about four servings."
The takeaway: 32 oz+ is not for one person. It's for sharing. For a single customer walking out of your shop, 24 oz is the largest size that still feels personal.
3. Cold Brew Is Premium. Size Signals Value.
Cold brew costs more than regular iced coffee because it takes longer to make. Starbucks' 16 oz cold brew requires a 20-hour steep process.
Your cup size sends a message:
| Size | What It Says |
|---|---|
| 12 oz | "This is a small add-on" |
| 16 oz | "This is a standard drink" |
| 24 oz | "This is THE cold brew. You're getting your money's worth." |
Wawa launched its cold brew program in 16 oz and 24 oz only. No 12 oz. No 32 oz. They called it a success with strong sales from day one. They picked the two sizes that bracket individual consumption.
Why PET Is the Right Material for Cold Brew
The industry standard for cold brew to go is PET (polyethylene terephthalate). Here's why:
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Crystal clear — shows off cold brew's amber color
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Impact-resistant — survives car cup holders and commutes
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Recyclable — meets customer expectations
24 oz PET cups are widely available from suppliers like BTO BTO Packfactory. You can get custom printing, dome lids, and strawless sip lids.
A practical point: 24 oz fits standard cup holders. 32 oz buckets often don't. That matters for the "to go" part of your business.
Practical Suggestion: Three Sizes
If you have room on your menu, run three sizes:
| Size | Positioning |
|---|---|
| 16 oz | Price-conscious customers, or an afternoon "small treat" |
| 24 oz | Hero size — put it front and center on your menu board |
| 32 oz | Sharing (two people splitting one drink) or extreme indulgence |
If you can only stock one size for cold brew to go in 2026? Make it 24 oz. It captures the 62% of consumers who want a generous portion. It stays under the "too much" threshold. And it delivers a premium experience at a price that works for your margins.
About BTO BTO Packfactory
BTO BTO Packfactory manufactures custom disposable PET cold cups. Sizes from 12 oz to 32 oz. Custom printing, custom colors, and compatible lids available.
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Minimum order: 1,000 pieces for custom orders
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Lead time: 3 days for design proof, 7 days for sample production
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Materials: PET and PP, BPA-free
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Certifications: FDA food contact compliant
Planning a cold brew program? Not sure which size to start with? Want to see samples? Contact us. Send me your menu. I'll help you figure out the starter plan.