With the heat of the stove and being exposed to air, copper eventually acquires spots with time. Here are presented some suggestions on how to clean your copper accessories.
When you use your copper kitchenware for the first time after you buy it, you should boil a large amount of water and wash the accessory with that water to remove any impurities that it may have.
There are two steps that must be followed in order to prevent resistant spots and scratches: the first one is using wood, nylon or coated nonadherent spoons, so that its movement won't scratch the utensil; the second one is placing the accessory immediately after using, in hot water with soap, so that food scraps are soften. This way you will only need to put water and use a soft cloth to clean it.
To make the accessories that no longer have varnish shine, use a non-abrasive metal polisher or lemon.
Here are two traditional suggestions to clean copper:
a) Procedure: In a clean cloth, place a small amount of ketchup and spread it evenly in the utensil. Let it rest for 1 or 2 minutes. Clean with a dry cloth until it is completely dry.
Photo Credit: http://lifehacker.com/5992983/clean-copper-cookware-with-salt-and-ketchup
b) Procedure: Add a soup spoon of salt to a white vinegar tea-cup. Add the wheat flour gradually until a paste is formed. With a cloth spread the paste on copper, rubbing very well the stained areas. Allow it to work for 15 to 60 minutes, depending on the degree of dirt. Rinse with warm water and make a mild polishing.
Some of our utensils are varnished, in order to avoid that they oxidize when stored or to avoid losing their luster, like in the case of decorative products. In the case of varnished domestic utensils, it is imperative that you remove the varnish before using them.
Please follow these instructions to remove varnish:
1. Fill a large container with water and soak the piece from which you want to remove the varnish;
2. Add a soup spoon of sodium bicarbonate for each liter of water;
3. Put it on the stove and let it boil for 15 minutes. You will watch the varnish layer coming off the product;
4. Wash the utensil with water and soap, dry it on the inside with a clean cloth and, in case you want to preserve the exterior luster of the piece, use a specific product to clean metals;
If, when cleaning is finished, you verify that there is still varnish in some areas, you can easily remove it with a cloth soaked with acetone.
It is highly important that you remove all varnish before you use the utensil. Otherwise, it will turn dark due to the heat of the stove.