Once opened, how long does a 5 grain mix last?

The correct answer indicates that once opened, a 5 grain mix can last for 14 days. This timeframe reflects the shelf life of many uncooked grain products after they have been exposed to air and moisture, which can affect freshness and quality.

Proper storage conditions, such as keeping the mix in a cool, dry place and sealing it tightly, help maximize its longevity and prevent spoilage. The 14-day period is often based on the manufacturer's guidelines, which take into account factors like potential bacterial growth and loss of flavor or nutritional value. Understanding how to manage and store these products is essential for maintaining quality and ensuring customer satisfaction in a bakery setting.

The other choices provided do not align with common food safety guidelines for grain mixes, which tend to have a longer shelf life than just a few days, but also not extend beyond two weeks in practice for optimal quality.