All CORELLE dinnerware is manufactured in the USA by the same Corning, New York factory that has made every piece since the line was launched in 1970. The CORELLE brand is no longer part of Corning, Inc and is now owned and operated under World Kitchen, LLC, whose family of brands includes household names such as CHICAGO CUTLERY®, CORNINGWARE®, EKCO®, PYREX® and REVERE® etc.

CORELLE dinnerware is created through a very special glass lamination process which thermally bonds two clear “skin” layers of glass to a white or beige “core” layer.The result is lightweight, stackable dinnerware that resists breaking, cracking, and chipping.


CORELLE glass compressing process which manufactured CORELLE bowls and plates is not applicable to make CORELLE cup, mug’s shapes with handles and foot of Chinese rice bowl. Hence, CORELLE cups, mugs and Chinese rice bowl are manufactured in Japan using an ultra hard porcelain material which is almost similar to CORELLE glass in strength and colour.


Grey metal marks can be commonly found on all glass products. These marks is caused by friction between glass and metal such as using metal utensils, silverware, exposed metal on dishwasher racks or stainless steel sinks. Most glasses are transparent, and metal mark is not found easily. While CORELLE is a 3 layered compressed white or beige glass, these marks can be found easily. Tips: To remove these marks, clean gently with a recommended non-abrasive cleanser such as CORNINGWARE Cleaner & Conditioner.


Each community has a slightly different composition to its water supply. These can be caused by iron deposits in your water supply with high iron content or even by exposed metal parts in your dishwasher or drying rack. Tips: To remove iron stains, use a mild cleanser or a recommended non-abrasive cleanser such as CORNINGWARE Cleaner & Conditioner.


The oils from coffee or tea will adhere to the sides of the cups or mugs because of the mineral deposits/residue in the water.Tip: This coffee or tea discolouration can be removed by cleaning with baking soda or mild cleanser. Alternatively, fill cup or mug 1/4 full with vinegar, dip and clean with a paper towel. Rinse and dry thoroughly.


Although all the products are being manufactured by cutting edge machines, the backstamp can be printed slightly off from the middle. As this is within the company QA (Quality Assurance) criterion and only items passed by the criterion can be sold, it is not covered under warranty.


This mark seen on the back is resulted from the manufacturing process. As this is within the company QA (Quality Assurance) criterion and passed by testing agency, it is not covered under warranty.


CORELLE is coated with a clear & harmless coating spray at the last process to avoid any damage from glass-to-glass contact during shipping. Please wash the new CORELLE in warm water before using to remove the protective coating.


The CORELLE dinnerware manufacturing process produces strong, lightweight dinnerware. However, there may be some visible variance on the rims of the items that is noticeable when the dishes are stacked. CORELLE may appear to be warped because they fit so snugly together; repositioning them in the cabinet may make it less noticeable. This variance is within the guidelines set by our QA (Quality Assurance) department and does not affect the performance of the product. There is nothing that can be done in normal household use to cause CORELLE to warp.


Yes. As CORELLE is heat resistant as well as break resistant, it can be used in microwave oven. But do not heat CORELLE on top of gas, electric and ceramic stovetops, on or near any other direct heating source such as range heat vents, pilot light, open flames, etc even for warming purposes. Do not use CORELLE under broiler/griller, browning element of microwave oven or in a toaster oven.


Yes. CORELLE can be used in refrigerator or freezer as well as in microwave oven. For use in freezer, please use with caution as liquid expansion may cause possible pressure for glass to break.


No harmful substance can be found in the glass material. In particular, all products manufactured by World Kitchen LLC pass the strict criterion which FDA in USA stipulates. Besides, CORELLE is nonporous ; it does not stain or retain odors.



Grey metal marks can be commonly found on all glass products. These marks is caused by friction between glass and metal such as using metal utensils, silverware, exposed metal on dishwasher racks or stainless steel sinks. Metal utensils should not be used with CORNINGWARE. Instead use wooden, nylon or plastic utensils. Tips: To loosen food, allow cookware to soak and use only plastic or nylon cleaning pads with non-abrasive cleansers such as CORNINGWARE Cleaner & Conditioner. A soft sponge with a non-abrasive cleanser may also remove the grey marks on your CORNINGWARE .

All CORNINGWARE cookware can be used in conventional, convection, toaster and microwave ovens; gas and electric stovetop; in the refrigerator, freezer and dishwasher. For use in freezer, please use with caution as liquid expansion may cause possible pressure for glass to break.


CORNINGWARE cookware is made of a highly heat resistant and durable glass ceramic material. It is very heat resistant and does not stain or retain odors as will plastic cookware. It is easy to clean and is harmless to health.


Generally you should not use any chipped, cracked or broken glass product. The glass item can be very risky. Hence, do not use damaged CORNINGWARE cookware or PYREX glass cover.


To loosen cooked-on food, soak cookware in mild warm soapy water or in vinegar and water mix with the ratio of 1:3 for long hours. CORNINGWARE cookware retains heat so well; you can use a lower heat setting than normal and save on energy. This also helps prevent sticking or burning of food. Use only plastic or nylon cleaning pads, as metal harsh scouring pads can leave grey marks on CORNINGWARE cookware surface.


World Kitchen (Asia Pacific) promises to replace any glass-ceramic part of your CORNINGWARE cookware that breaks from hot or cold temperatures within ten years from date of purchase. But chipped or cracked by impact is not covered under warranty.Tips: See illustration to differentiate if your CORNINGWARE is due to mechanical or thermal breakage.


CORNINGWARE cover is made of PYREX glass. World Kitchen (Asia Pacific) promises to replace any PYREX glass cover that breaks from heat within two years from date of purchase. But chipped or cracked by impact is not covered under warranty.


No. CORNINGWARE cookware is sold together with its cover.



Is the plastic cover covered under warranty?



The mark sometimes seen on the base of the ware is from the manufacturing process. When the gob of hot glass is cut, the scissors leave a mark or a ‘line’ in the glass. As the glass cools rapidly, the mark hardens in the glass. This mark can be seen with the naked eye and sometimes felt with the finger. This is no way detracts from the performance of the ware, nor will it cause breakage.

All VISIONS cookware can be used in conventional, convection, toaster and microwave ovens; gas and electric stovetop; in the refrigerator, freezer and dishwasher. For use in freezer, please use with caution as liquid expansion may cause possible pressure for glass to break.


VISIONS cookware is made of a highly heat resistant and durable glass material. It is very heat resistant and does not stain or retain odors as will plastic cookware. It is easy to clean and is harmless to health.


Generally you should not use any chipped, cracked or broken glass product. The glass item can be very risky. Hence, do not use damaged VISIONS cookware or PYREX glass cover.


To loosen cooked-on food, soak cookware in mild warm soapy water or in vinegar and water mix with the ratio of 1:3 for long hours. VISIONS cookware retains heat so well, you can use a lower heat setting than normal and save on energy. This also helps prevent sticking or burning of food. Use only plastic or nylon cleaning pads, as metal harsh scouring pads can leave grey marks on VISIONS cookware surface.


World Kitchen (Asia Pacific) promises to replace any VISIONS cookware base that breaks from hot or cold temperatures within ten years from date of purchase. But chipped or cracked by impact is not covered under warranty.Tips: See illustration to differentiate if your Visions is due to mechanical or thermal breakage.


VISIONS cover is made of PYREX glass. World Kitchen (Asia Pacific) promises to replace any PYREX glass cover that breaks from heat within two years from date of purchase. But chipped or cracked by impact is not covered under warranty.


No. VISIONS cookware is sold together with its cover.


Yes, World Kitchen (Asia Pacific) promises to replace any part with a manufacturing defect, without charge, within one year from date of purchase. But plastic cover cannot be purchased separately.



PYREX ovenware products equal versatility. PYREX ovenware comprised of a wide variety of products, including prepware, bakeware, serveware, transportation and storage ware. Consumers use PYREX ovenware for everything from preparation to oven baking, microwaving, serving, transporting and storage.

PYREX ovenware can be used in microwave, convection, or preheated conventional oven, refrigerator and freezer. A number of PYREX ovenware pieces are available with plastic sealing lids for microwave and storage usage. For use in freezer, please use with caution as liquid expansion may cause possible pressure for glass to break.



Baker’s Secret Bakeware is made of tin coated steel.


Baker’s Secret Bakeware is made of tin coated steel.


Some are stainless and some are aluminum. Stainless steel is what REVERE uses for any current line of cookware that does not have a non stick coating. REVERE cookware product with nonstick is made of aluminum.

Pitting is caused from a high acid content (tomatoes, etc.) over time. Warping happens from high heat or putting the product into the sink when it is hot.



Sharp knives are safer than dull ones because dull knives require more pressure for cutting, which can result in slipping. Sharpening knives with a sharpening steel can seem difficult at first, but it’s actually quite easy once you get the hang of it.

  • 1. Hold sharpening steel point down on flat stable surface like table or cutting board.
  • 2. Angle the knife blade so that it is approximately 15 degrees from the sharpening steel.
  • 3. Pull the knife down & across the sharpening steel in a slight arc, pulling the knife handle toward you. Stroke the entire blade edge from base to tip.
  • 4. Repeat on the other side of the steel.
  • 5. Repeat steps 3 & 4 three to five times, alternating the right & left side of the cutting edge.

Tips: Knives should be sharpened after every couple uses for maximum performance. Use a scouring powder to clean & remove metal particles from your sharpening steel. After cleaning the steel, rinse it with water, dry it thoroughly & store it in a dry place.

For best results, hand wash your knives with a soapy cloth & dry immediately. Soaking wood-handled knives in water can remove the natural oils from the handles. Dishwashing may cause banging against other dishes that can nick the edges. Additionally, the heat & detergent may have a corrosive effect on the handles.


Sharp knives should never be stored loose in a drawer because contact with hard objects can dull the blade & reaching into a knife drawer can be very dangerous. We recommend storing your knives in a hardwood block for safety & convenience. Many CHICAGO CUTLERY sets include a hardwood block for storage. Empty CHICAGO CUTLERY hardwood blocks are also available at many retailers.


Knives are available with two different types of blades:

Stamped – Punched out of a single sheet of steel, resulting in thin, light blades. Forged – Made from one piece of steel that is heated until soft then pounded into shape with a hammer. Forged knives are strong & heavy with a bolster (located where the blade meets the handle) for safety & balance. CHICAGO CUTLERY offers a wide variety of knives with both stamped & forged blades.

Tips: Different types of knives & uses: