No, it is not safe to use regular freezer bags for boiling or cooking food. Freezer bags are not designed to withstand high temperatures, and exposing them to boiling water or direct heat can cause them to melt, release harmful chemicals, and contaminate the food inside.
Regular freezer bags are made from plastic materials such as polyethylene, which have a lower heat resistance than materials intended for cooking, like food-grade silicone, heat-resistant nylon, or certain types of food-grade plastics approved for high-temperature use.
If you need to cook or boil food in water, it is essential to use cookware specifically designed for that purpose, such as pots, pans, and oven-safe containers made of appropriate materials. Food-grade silicone bags or bags specifically labeled as safe for cooking may be suitable for sous-vide cooking or low-temperature applications, but always check the manufacturer's recommendations and temperature limits.
For safety and to prevent any potential health risks, it's best to use the right cookware and follow proper cooking guidelines and instructions.