A Nitro Cold Brew at Starbucks can only be ordered in tall or grande sizes. Find out why Starbucks puts a size limit on this particular coffee drink.

No – it’s not because of the caffeine. That’s the simple answer to a question that has been brewing on the internet about Starbucks lately: Why can’t you order a Venti Nitro Cold Brew?

Some days ordering a venti-sized coffee from Starbucks is necessary — but if you’re looking to order a venti Nitro Cold Brew, you’ll have to make do with just a tall or a grande.