The moka pot is a stove-top or electric coffee maker that brews coffee by passing boiling water pressurized by steam through ground coffee. Named after the Yemeni city of Mocha, it was invented by Italian engineer Luigi Di Ponti in 1933 who sold the patent to Alfonso Bialetti, an aluminum vendor. It quickly became one of the staples of Italian culture. Bialetti continues to produce the original model under the trade name "Moka Express". Spreading from Italy, the moka pot is today most commonly used in Europe and in Latin America. It has become an iconic design, displayed in modern industrial art and design museums including the Wolfsonian-FIU, the Cooper–Hewitt, National Design Museum, the Design Museum, the London Science Museum, The Smithsonian and the Museum of Modern Art. Moka pots come in different sizes, making from one to eighteen servings. The original design and many current models are made from aluminium with Bakelite handles. After the Second World War, the Italian moka pot spread all over the south of Europe and became the standard way of domestically making coffee. Its popularity led to non-Italian south European manufacturers making copies or new designs inspired by the original Italian design. In Australia, the moka pot was traditionally used by Italian migrants who arrived mostly after the Second World War. By 2000 the moka had become popular in the homes of many Australians. Today it is quite popular at breakfast time; often Australians will add the brew to a mug and top up with either water off the boil or warmed milk. Moka pots are typically made of aluminium, though they are sometimes made out of stainless steel or other alloys. Some designs feature an upper half made of heat-resistant glass. Moka pots are used over a flame or electric range. Stainless steel, but not aluminium moka pots can be used with induction cooking.