Kitchen utensil the turn of the 20th century, Maria Parloa noted that kitchen utensils were made of (tinned or enamelled) iron and steel, copper, nickel, silver, tin, clay, earthenware, and aluminium. The latter, aluminium, became a popular material for kitchen utensils in the 20th century. Copper has good thermal conductivity and copper utensils are both durable and attractive in appearance. However, they are also comparatively heavier than utensils made of other materials, require scrupulous cleaning to remove poisonous tarnish compounds, and are not suitable for acidic foods. Copper pots are lined with tin to prevent discoloration or altering the taste of food.
ChapStick popular lipstick-style tube for their lip balm products. In Iceland and in the United Kingdom, the product's main competitor is Lypsyl, made by Novartis Consumer Health and distributed in similar packaging to ChapStick. In the early 1880s, Dr. Charles Browne Fleet, a physician and pharmacological thinker from Lynchburg, Virginia, invented ChapStick as a lip balm. The handmade product, which resembled a wickless candle wrapped in tin foil, was sold locally, and did not have much success. In 1912, John Morton, also a Lynchburg resident, bought the rights to the product for five dollars. In their family kitchen, Mrs. Morton melted