This natural sweetener can be susceptible to spoilage if stored incorrectly.

Here's how to avoid ruining your pancakes. While Costco’s Kirkland Pure Maple Syrup is a popular buy—it only costs about $15 for 1 liter, depending on the season—storing the product properly is ...

Add Yahoo as a preferred source to see more of our stories on Google. Jacob Fox Chances are you may have never considered how long maple syrup lasts—or whether it can spoil. After all, it's a staple ...