My trenta iced coffee is bigger than my head.

If you think a venti is the largest size cup on Starbucks’ menu, you’re wrong.

The coffee chain actually has a secret, off-the-menu size called the trenta, which holds a whopping 31 ounces of whatever drink you order. For comparison, a standard bottle of wine is a little over 25 ounces.

You can only order a trenta for cold drinks, specifically iced teas, iced coffee, cold brew, and…