I had interesting email conversation in last few says.
White sugar is an intoxicating substance
In the four regulatory principles of Prabhupada, there is “not to take intoxicants”: alcohol, coffee, tea, drugs, smoking. He did not know that white sugar is whitened with lime without the knowledge of consumers, because there is no written in the ingredients. So for this reason ISKCON is used in temples, but it is time for it to be counted among the intoxicants and be replaced with other untreated sweeteners or fructose which is very cheap.