I just brewed a big stout (OG 1.093), pitched 3L starter of WPL-001. However, after 1 day, no activity in the fermenter, so I pitched wyeast Irish ale since I had it on hand. It has been 18 hours and still no activity. I swirled around the fermenter and foam went through the 1in blowout tube, but didn’t continue bubbling, making me think my wort self carbonated before fermentation. Has anyone heard of this or had it happen. I have brewed this beer several times and haven’t had this happen before.