When my mother was breastfeeding me 52 years ago she drank Sheaf Stout, well Sheaf Stout and Lemonade, a couple of 7oz glasses a week. One thing Australian Breweries do very well is produce very good stouts. If you can get hold of Southwark (7.2% from memory) it is indeed true heavan but in this part of the country very hard to get.
I suspect that Sheaf is a fairly simple recipe.
I will grab a longneck (the only way to buy Sheaf), pour off a sample to degas and measure gravity, this will give me a good start ( should check the pH but cannot) and drink the rest in the name of brewing. The problem may that particular fruity nose that Sheaf seems to have....watch this space !!
Kurtz