When asked to identify a cylinder in preschool, my now-11-year-old said, "It's a can of beer!" (meaning a Corny keg). Her teachers though it was hilarious and then demanded I bring them some homebrew.
My younger daughter likes to "brew" along side me, using unopened bags of specialty grains, a spare pot, and a spoon.
I figure hiding brewing and drinking from my kids isn't playing the long game. Everything is an opportunity for education, even if it's by counterexample.