Code:
char mlist0[6][11] = {"menu0","ESC >","Ja","Nein","foo","bas"};

class tMenu{
 private:
   int MENULEN;
 public:
   char ** list; //char * list[];


   void importlist (char ** extlist ) {
        int16_t N = MENULEN;
        for(int line=0; line<N; line++) {
           strncpy( list[line], extlist[line], strlen(extlist[line]) );
        }
  }
};


void setup(){
}


void loop(){
  tMenu menu0(char ** mlist0);
}