Yes they are.
What type of stoneware? Is it glazed or unglazed. If it is Papmperchef Stoneware it is quite safe and only gets better the darker it gets. It's called seasoning . Like a Cast Iron Skillet.
It all depends on condition. If its not chipped or cracked and the finish isn't worn you might get $100 for it.
form_title= Stoneware form_header= Cook with wonderful stoneware. What pieces of stoneware do you need?*= _ [50] Is this a gift for someone?*= () Yes () No Do you want the stoneware delivered?*= () Yes () No
Yes, 55-year old tupperware is generally safe to use. This is assuming that the ware is not scratched or chipped. If it is chipped or scratched, then those using it risk getting lead poisoning through use.
To season stoneware, simply rub a small amount of oil (such as vegetable or canola oil) over the entire surface of the stoneware. Place it in a preheated oven and bake at a low temperature for about 30 minutes. Allow it to cool before using.
I don't know that it's better to bake with stoneware. It really just depends on your personal preference. Many people like to bake with stoneware, because stoneware absorbs the flavor of the food you are baking. Therefore, after you bake many things on stoneware, the stoneware actually adds flavor to your food.
The stoneware won't, but if there are contaminants in it they could.
chipped ceramic cup
According to chefscatalog.com, their ambrosia dinnerware is made from stoneware.
No it is not safe to eat electricity.
$300