When was Sanka invented?

Sanka, a brand of decaffeinated coffee, was invented in 1903 by German coffee merchant Ludwig Roselius. He developed the decaffeination process using water and steam, extracting caffeine from the coffee beans. The name "Sanka" is derived from the French phrase "sans caféine," meaning "without caffeine." The product gained popularity in the early 20th century and remains well-known today.