Question 1

how water tight is the lid? If i have it in a cooler and it tips over will soup leak out?

Accepted Answer

The lid is great.  It doesn't leak around the edges or the vent hole near the middle.  I pack my wife's lunches and include soups and stews and they can end up on their side during transport.  No leaks.  I hand wash the lid as my dishwasher uses very high temperatures which warp plastic lids.  When the food is microwaved, it stays warm for a long time, as the ceramic heats up and stays warm through lunch.  I've frozen foods in them and have no problem with freezing.  I thaw them first before heating in a microwave.

Question 2

where made

Accepted Answer

I did a little investigating in response to your question. French White CorningWare is made in China (disappointing to learn). Ultimately, CorningWare is a brand of World Kitchen, LLC with corporate interests all over the world (Wall Street values?). World Kitchen employs approximately 2,300 people, and has major manufacturing and distribution operations in the United States, Canada, and Asia-Pacific regions. I dug a little further and learned that CorningWare has at least 3 lines, which include French White (made in China), Simply Lite (made in Corning, NY, USA) and Stovetop/Pyroceram (made in Bagneaux-Sur-Loing, France). For more information about French White® CorningWare by World Kitchen, LLC:Website: http://www.shopworldkitchen.com/corningware/ Email:  https://www.worldkitchen.com/contactus Consumer Care Center: 1-800-999-3436  Representatives available 8am - 6pm Monday -Thursday and 8am - 5pm on Friday, ESTTHE ORIGINS OF CORNINGWARE® BAKEWARE (sources: Wikipedia and World Kitchens, LLC)*	CorningWare (also written "Corning Ware") was originally a brand name for a unique pyroceramic glass cookware resistant to thermal shock. It was first introduced in 1958 by Corning Glass Works. CorningWare is notable for the fact that it can be used directly on the stovetop.*	In 1953, Dr. S. Donald Stookey of the Corning Research and Development Division invented Pyroceram®, a white glass-ceramic material capable of withstanding a thermal shock (sudden temperature change) of up to 450 °C (840 °F). It evolved from materials originally developed for a U.S. ballistic missile program, and Stookey's research involved heat-resistant material designed to absorb huge temperature fluctuations in nose cones (the forwardmost section of a rocket, guided missile or aircraft).*	When introduced for home use in 1958, Pyroceram® was able to go directly from freezer to oven to table, while its modern designs added a touch of everyday elegance. Given the versatility in the kitchen, CorningWare brand engineers designed each piece with tight-fitting lids for storage, the requisite shapes, sizes and durability to serve as bakeware with fashionable designs for any kitchen.*	Eventually CorningWare brand changed its formula to a stoneware material.  CorningWare stoneware is:             -	Safe in microwave, convection and conventional ovens             -	Safe for freezer and refrigerator use             -	Easy to style around, from classic to contemporary, country to urban             -	Non-porous so it won't absorb food odors and resists staining             -	Easy to clean by hand or in the dishwasher             -	Tried and true for years of service in the kitchenREINTRODUCTION OF CORNINGWARE AND PYROFLAM*	In 2009, the stovetop line of CorningWare was reintroduced by World Kitchens. The cookware is manufactured by Keraglass/Eurokera (a subsidiary of Corning also specialised in vitroceramics for cooktop panels and equipment for laboratories) in Bagneaux-Sur-Loing, France. This is the only factory in the world still manufacturing vitroceramics (aluminosilicate glass) for cookware. At the time it restarted the production of CorningWare, Keraglass/Eurokera was able to abandon the use of arsenic in the manufacture of their vitroceramics, thanks to the modern technology of their newly built oven.*	In Europe, it is ARC who sells equivalent cookware to CorningWare under the name Pyroflam with a slightly different design. Since 2009, Pyroflam has been manufactured in the same French factory as CorningWare.*	CorningWare is sold worldwide, and it is popular in Canada, United States, and Australia.ABOUT WORLD KITCHEN, LLC World Kitchen, LLC and its affiliates manufacture and market bakeware, dinnerware, kitchen and household tools, rangetop cookware and cutlery products sold under well-known and trusted brands including CorningWare®, Pyrex®, Corelle®, Revere®, EKCO®, Baker's Secret®, Magnalite®, Chicago Cutlery®, OLFA® and OLO®, Snapware®, Visions® as well as some products for other brands including Anchor Hocking, Calphalon, Cambridge, Charcoal Companion, CircleGlass, Contigo, Fit & Fresh, Grand Epicure, Hefty, ingredients, Lodge, Nordic Ware, OXO, PAO!, Pizzacraft, T-fal, Friendly Faces Melamine, Kitchen Kare and Tabletops Unlimited Denmark.

Question 3

Does the lid loose integrity after multiple times in the freezer and dishwasher?

Accepted Answer

We own 5 of the mugs and have used them since at least 2009. I never placed them in the freezer, but did use the mugs with lids in the microwave and washed them in the dishwasher. Over time, the inner rims of the lids  have become brittle and have broken on all 5 lids . I contacted the parent company when I could not find replacements online and was told that lids could no longer be purchased separately.

Question 4

My daughter wants to make French Onion Soup which requires the mug to go in the oven for the cheese to melt. Does that sound feasible?

Accepted Answer

This mug is oven-safe, but the lid isn't.  I don't see why it wouldn't work for making onion soup as long as it holds the amount you want.

Corningware 20-Ounce Oven Safe Meal Mug with Vented Lid, French White

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