Kafi Luz or Kafi Fertig is a Swiss coffee that is usually made with Träsch—fruit brandy produced from pear and apple pomace that is mainly enjoyed in Central Switzerland. The recipe includes a splash of fruit brandy (schnaps), sugar, boiling water, and instant coffee.
The drink should be pale and transparent, and it is typically served in a tall stemmed glass. This coffee was invented sometime in the 18th century when drinking schnaps was a common practice in Switzerland, especially in rural areas where each day would begin with a shot of brandy.