You learn something new every day (if you’re lucky), and today we learned why bread tags—the colored plastic tags (photo #1) or twist ties that close plastic bags of bread—are made in different colors.

Also called bread buckles and bread clips, these tags or twists are part of a color-coordinated system that marks when the bread was baked and packaged.

It’s meant to help the market’s stock clerks identify older loaves that should be pulled from shelves.

While we always look at the expiration date before we buy bread, looking at each tag for the loaf’s expiration date would take too much time for food store staff.

The color-coding helps the clerks pull older loaves from the shelves speedily.

> The history of bread tags is below.
 
 
HERE’S THE COLOR CODE

Most bakeries don’t produce bread on Sundays and Wednesdays, which is why they’re missing from this list. The colors were assigned in alphabetical order: blue, green, red, white, yellow.

 
 
HERE’S HOW TO RE-USE THE TAGS

You can find dozens of creative and useful ways to re-purpose the plastic tags when the bread bag is empty.

Our favorite is as “cable labels” to identify computer cables, charging cords, monitor cord, printer cord, TV cord, and others.

You could purchase these colored labels (photo #3) to identify all of your cords, or you could think green and use a Sharpie and your bread tags.

Whether you use cable labels or bread tags, organizing your cords with color-coded labels lets you pick out the cord you’re looking for.
 
 
THE HISTORY OF THE BREAD TAG

According to some sources, the bread tag was invented by Floyd G. Paxton of Yakima, Washington (1918-1975). The story is that he invented his “Kwik Lock closure” on a flight in 1952.

Necessity is the mother of invention: He opened a bag of peanuts and had no way to close them.

So Paxton used his pocket knife to carve out a prototype closure device from an expired plastic credit card (prior to 9/11/2001 you could carry knives onto the plane).

His invention was later adapted for commercial use as an easy way to initially seal and then reseal bags [source].

Today, Kwik Lok is the global leader in bag closures.
 
 
> The history of bread.

> Check out the different types of bread in our photo glossary.

[1] Go green: repurpose your plastic bread tags. Here are 25 uses (photo © Kwik Lok).