Given the fact that vitamin D3 can come from non-kosher sources, if it is added to kosher milk, does that change the kosher status of the milk?
• ANSWER: To fully explain the issues involved, we cannot avoid touching upon a Talmudical term ‘Bittul’, translated as ‘dissipation’. The rule is quite complicated – not in concept, but in the understanding of when it may be applied and when it cannot be applied. Basically, the rule states, that if a category of non-Kosher food [Note: Not all non-Kosher products] fell into accidentally, or was even added intentionally by someone else, into Kosher food, if there was a ratio of 60 to 1 of Kosher food to the non-Kosher food, then we may consider the non-Kosher food to have been dissipated and the entire product may be eaten in this case. [Please note: This does not apply in all cases; there are times when the ratio may increase or decrease in different settings, and the exact foors matter as well. We urge you not to apply this rule without checking with your learned Rabbi] If you go back and study the wording we used earlier (‘by someone else’), you should realize that you are not permit
