Shulchan Aruch (YD 124:1) states: A Nochri child who does not mention idolatry or Meshamshim, if he touched wine he forbids only drinking it, but not benefit from it. (See this related ...
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 ...