"No, it's the ratio that makes it difficult. Nital is common in the modern world, or it was, at least as an etching product and it was commonly made in 10-15% concentrations." Senku explained. "But I need something much stronger, at 30%. The other 70% is alcohol." He continued. "The alcohol substitutes the energy that's not be expended while the person is in something of a cold sleep. Their consciousness lasted, hm, at most ten days. It was about every ten days that it became a struggle to keep my awareness."

He considered. "I have an occasional drink at times. After the last mission I did get very drunk with Xue Yang." Senku chuckled lightly. "As an experiment of sorts."