Asterix en de knallende ketel was released in the year 1989。Asterix en de knallende ketel is also called as Astérix et le coup du menhir, Asterix och Bautastensmällen, Asterix ja suuri taistelu, Asterix e la grande guerra, Asterix and the Big Fight, Asterix - Operation Hinkelstein, Astérix y el golpe del menhir, Astèrix i el cop de menhir。

When the druid Panoramix is attacked by some roman soldiers, Obelix drives them away by throwing a menhir on them - which accidentally hits Panoramix. After this the druid has lost his memory and can not remember the formula of his magic potions, especially the one which gives superhuman strength.