Before you choose an packaging bag for selling food, please take the below ideas into account: The packaging bag must be suitable for food item, the packaging bag must be meanful for potential customers, the packaging bag must be legal in selling area.
Instructions
1
Select a proper container to store your food products. The packaging bag should be air-tight, water-tight and resistant to moisture, grease and odors. And the material shoule be  approved by the FDA (for USA marketing area). There are two kinds of test for food packaging material: Direct food contact (if it will be directly on the food) and indirect food contact (for the outside packaging). You can ask manufacturers to provide the certifications. The above tips are suitable for different packaging choices, such as bags, shrink wrap, plastic containers, and glass containers.
2
If the goods are selling in USA, you need also attach a label on the packaging bags. The label should be printed with below information: The name and complete address of either the manufacturer, packer, or distributor; the net amount of food in the package in metric and English units; the common name of the food; ingredients in descending order; and any allergens such as milk, peanuts, eggs, etc. You can choose to print this information in label and then attach them with packaging bag, or print them directly on the package as a part of the package design.

3
Process the food product at a certified or commercial kitchen, such as in retail or wholesale food establishments. Food cannot be processed for sale in private kitchens.
4
Put on single-use gloves and use utensils (when necessary) to transfer ready-to-eat foods to the packaging. Make sure there are no bare-hand contacts with the food and that all handlers have washed their hands, are gloved and not ill.
5
Insert the food product in the packaging and ensure the seal is tight. If using a sealable bag, make sure to remove all the excess air before sealing. Hermetically seal the container (jars and cans) under steam pressure or pack the products under the supervision of the Department of Public Health.
Tips & Warnings
Work with a package designer or a graphic designer to design the package or package art to be eye-catching.