Slow Cooked Brisket Timing Help

[ICEx21]

Hi folk,

Can anyone advise me how long to slow cook a brisket that weighs 0.748kg?
Many thanks in advance

 

[ICEx21]

Ah sorry for the confusion, I meant for the oven. I've already put it in the oven at gas mark 1 as suggested by someone on youtube, only thing is they used a much larger joint and cooked it for 14 hours so I was a little confused.