Suppose that while you are away, your non-Jewish housekeeper borrows your mevushal bottle of wine and pours some off for avoda zara (apparently, despite the fact that it's mevushal, it's "good enough" ...
Would a gentile child - under the age of 13/12 - that sees/touches wine make it into Yayin Nesech? Or can only an adult make it into Yayin Nesech?
Per the answer to Are children adopted by Jews Jewish? a child that is adopted by Jewish parents when they reach adulthood (13/12) are given the choice of remaining Jewish. If I know of a child that ...