To enhance wine complexity, should I put different yeast strains in the same tank, at the same time?
This is not recommended. The introduction of two yeast strains into the same tank creates a competitive atmosphere. Like Ali and Frazier, these strains will duke it out competing for nutrients and sugars. Competition leads to weaker yeast populations and an increased chance of stuck or sluggish fermentations. Also, yeast strains that display a competitive factor will knock out sensitive strains so fast, you will think the fight was promoted by Don King. So how can you do a dual fermentation? Fill two tanks with the same juice/must. Then inoculate each tank with a different yeast strain. Blend the tanks after alcoholic fermentation to achieve your goal of complexity without putting your fermentation’s success at risk.
