After Trafalgar, what liquid was Nelson's body preserved in for the voyage home?

Nelson died aboard HMS Victory at about 4.30pm on 21 October 1805. There was no lead coffin on board, so his body, stripped except for a shirt, was placed in a leaguer, the largest size of cask carried, and filled with brandy. A Marine sentry stood guard over it on the middle deck. The cask was arranged so that old brandy could be run off and new brandy poured in without disturbing the body. On 24 October escaping gas lifted the lid and alarmed the sentry, and the spirit was renewed. More was obtained at Gibraltar on 28 October, and it was renewed twice again during the five-week passage to Spithead. On 11 December the body was found to be in a state of perfect preservation, and the surgeon, Dr Beatty, recovered the ball that had killed Nelson. The body was then placed in a lead coffin of brandy holding camphor and myrrh, inside a wooden coffin made from the mainmast of the French ship L'Orient, and taken to Greenwich Hospital.