18/08/2025
There's something magical about the coolship season. After 8 years of having my wort brewed by the crew at and transported on trailer in IBC's to Gladstone, I'm finally now brewing my own wort ON SITE!
In March of this year, I acquired a brand new Braumeister 200L brewery for a steal of a price. It's a perfect size for my little operation here at Gladstone, and it allows me the freedom to brew to my own schedule. It also opens up an array of options, as far as different mash programs (such as Step or "Turbid" mashing), grain bill compositions, target IBUS etc are concerned - the options are seemingly endless with this new kit.
This season, I put down back to back batches of wort following a complex and more traditional turbid mashing method. I also increased the raw wheat composition of the grain bill from ~20%, to a more appropriate (for the style of beer I'm trying to produce) 40% - decreasing the malted barley portion from 80% to 60%. The IBU's were also increased slightly and dialed in using 2025 Nelson Sauvin and a single 90-minute addition.
Turbid mashing itself involves multiple mash temperature steps and at least one decoction pull - the later of which was temperature stabilised using my 50L Braumeister. The idea behind Turbid mashing is that you essentially create a more starchy, less [initially] fermentable wort that organisms like Brettanomyces spp. and Pediococcus spp. can chip away at further down the fermentation process, leading to more complex and interesting beers. Both of the batches of wort were brewed on the same day and pumped into the same coolship to be innoculated overnight.
I'm excited to say that both batches went a little too well... I made minor tweaks on the second to test a couple of parameters, but I hit all my numbers. The weather gods also cooperated as well - cool, overnight temperatures as low as -3.2ยฐC, with a light frost were ideal conditions for coolshipping. ๐ฅถ๐ป