How long does peanut butter and jelly mixture keep in the fridge?

Homemade peanut butter and jelly mixture: Keep in an airtight container in the fridge for up to 2 days

Store-bought (sealed): Check the "best by" date on the package. Once opened, store in the fridge for up to 2 weeks

Store-bought (unsealed): Store in an airtight container in the fridge for up to 1 week.