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The kris or keris is an asymmetrical dagger indigenous to Indonesia, Malaysia, Thailand and Brunei. It is known as kalis in the southern Philippines. The kris is famous for its distinctive wavy blade, but many have straight blades as well. Both a weapon and spiritual object, kris are often considered to have an essence or presence, with some blades possessing good luck and others possessing bad.

In 2005, UNESCO gave the title Masterpiece of the Oral and Intangible Heritage of Humanity to the kris of Indonesia. In return, UNESCO urged Indonesia to preserve their heritage.UNESCO, Proclamation 2005: "The Indonesian Kris".

Kretek () are cigarettes made with a blend of tobacco, cloves and other flavors. The word "kretek" itself is an onomatopoetic term for the crackling sound of burning cloves.

Haji Jamahri, a resident of Kudus, Java, created kreteks in the early 1880s as a means to deliver the eugenol of cloves to the lungs, as it was thought to help asthma. Jamahri believed the eugenol cured his chest pains and he started to market his invention to the village, but he died before he could mass market it. M. Nitisemito took his place and began to commercialize the new cigarettes. Today, kretek manufacturers directly employ over 180,000 people in Indonesia and an additional 10 million indirectly.Hanusz, Mark Smoke; A Century of Kretek pp. 140-143

Partly due to favorable taxation compared to "white" cigarettes, kreteks are by far the most widely-smoked form of cigarettes in Indonesia, where about 90% of smokers usually smoke kreteks.

In Indonesia, there are hundreds of kretek manufacturers, including small local makers and major brands. Most of the widely-known international brands, including Bentoel, Djarum, Gudang Garam, Jakarta, Sampoerna, and Wismilak, originate from Indonesia. Nat Sherman of the United States produces cigarettes branded as "A Touch of Clove" but are arguably not kreteks since they contain clove flavoring in the filter rather than actual clove spice mixed with the tobacco.