BrewDog Collabfest 2013. Our Newcastle team were originally fancying a raspberry porter, but ended up opting for a raspberry saison because it’s ‘a bit more exotic’ and that’s what you need to keep you warm on the Toon quayside. Having just returned from a trip to Belgium, brewer Steve Gibbs was keen to put what he’d learned into action and took this as an opportunity to experiment. This being the first time Steve had used saison yeast, he decided to use a 50/50 mix of saison and ale yeast to get the proper saison flavours but also allow allow him a degree of certainty when fermenting.