An opened jar of baby food should never sit at room temperature longer than two hours. You can keep strained fruits or vegetables in the refrigerator for 2-3 days and store them in the freezer for 6-8 months. Strained meats and eggs will last in the refrigerator for one day and can be frozen for one to two months. A meat and vegetable combination will last one to two days in the fridge and up to two months in the freezer. A jar of solid baby food that's been opened can be stored in the refrigerator for up to 3 days. Write the date on the lid of any opened baby food so you'll know how long you can safely keep it. If you have a baby to feed, you've got enough to do without having to get out and go to the store. Just get online and order what you need through Instacart, and a shopper will do the legwork and get your items to you in as little as two hours.