Butter salt is a seasoning developed in the late twentieth century for the purpose of combining the flavors found in salt and butter. It is a fine, golden powder, originally salt, enriched with butter flavoring. It is often used as a seasoning for popcorn. Seasoning is the process of adding flavours, or enhancing natural flavour of any type of food. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s The 20th century lasted from 1901 to 2000 in the Gregorian calendar (often from (1900 to 1999 in common usage). ... Flavor or flavour (see spelling differences) is the sensory impression of a food or other substance, and is determined mainly by the chemical senses of taste and smell. ... For other uses, see Salt (disambiguation). ... Butter is commonly sold in sticks (pictured) or blocks, and frequently served with the use of a butter knife. ... Popcorn Popcorn or Popping Corn is a type of corn which explodes from the kernel and puffs up when heated. ...