Here in our city there is the costume of making white beer and red beer, sometimes we mix one with the other- we need to pay attention that the red does not colour the white one, because they want to make the white red on purpose. See “Nishmat-Adam”, part 4-3, see there. See “Eshil-Avraham”, comment 25, which forbade the commerce of brandy and liquor, from putting colour inside it so as others buy it, on account of getting benefit from it and so on and see there. And if you do the opposite, that is, put white into the red, as it is written in “Mahari Hagiz”, blessed be his memory, about putting the white in the red wine, I would hesitate in this leniency in a place where the intention is to dye the white, but only when there is no intention to dye the white, then in such cases it should be allowed to put the white in the red.