Squiggly lines indicate that your container is microwave safe. This symbol can vary a lot ... which range from 1 to 7, Tupperware has a handy chart. At the end of the day, not every plastic ...

If your Tupperware has a symbol with wavy lines or a microwave with wavy lines, you can use it in the microwave without fear. Most containers have the Tupperware symbol of three arrows forming a ...

New Tupperware bowls have ... rather like the hurricane symbol on a weather map. The whorled handles allow you to take the dish out of the microwave without scorching your fingers, and the loose ...

which he said has been selling out in Tupperware’s direct sales channel. “Most consumers don’t know about it.” It lets you grill in the microwave and can make grilled cheese sandwiches ...

Reusable food-storage containers kept leftovers fresher for longer, made packing lunches easier, and, when combined with the ascendantly popular microwave ... Tupperware products became a symbol ...