Adolf Gutsmuth was buried alive several times to demonstrate a safety coffin of his own design, and in 1822 he stayed underground for several hours and even ate a meal of soup, bratwurst, marzipan, sauerkraut, spätzle, beer, and for dessert, prinzregententorte, delivered to him through the coffin's feeding tube.The 1820s also saw the use of "portable death chambers" in Germany.