clean enamel ware from sediment, fill it with salted water and, having add vinegar, leave for several hours.
• To remove black discoloration of enamel ware, fill it with hot water, add soda (a teaspoon per a glass). Having left for several hours, rub clean with salt and rinse.
• After being in oven there can appear brown stains on plates and dishes, to remove them - clean the plates and dishes with kitchen salt several times, at intervals rinsing.
• Sediment in a form of black coating, appearing on teapots after long brewing, and making taste of tea worse, should be removed by the following way: Inside the teapot the black coating is removed by a rag, wetted with water and soda. To remove the sediment from its spout, pour boiling water into the teapot and add soda (a teaspoon per a glass). Then leave it for 2-3 hours, wrapping up by a towel 2-3 times. Then rinse it with hot water at least three times.

So, these are the main and quite useful the tips to be a good housewife!