I have a question about harvesting yeast from a primary. I will be brewing a seasonal beer in the upcoming days and will be pitching pacman yeast that I am currently building up. I want to build up a nice collection of the yeast and was going to harvest a larger quantity from the upcoming brew but, what I am unsure of is if off flavors will follow the yeast when harvesting.
My upcoming brew will have ginger and a number of spices. If I harvest yeast from that batch can traces of the spices follow the yeast into other beers made?
Or will multiple yeast washing wash out those spices from the yeast?