He could brew at a secret location, like a hidden cave or an abandoned house on the outskirts of the village.
Naruto might use his shadow clones to do the brewing while he is off doing normal ninja things. That way, no one suspects that he is the actual brewer. Also, he could use his transformation jutsu to disguise the brewing equipment as something else when someone is around.
To keep his brewing a secret, Naruto could use his skills in stealth. He would only brew at night when everyone is asleep. He could also cover up the smell of his brews with some other strong scents. And when transporting his brewing ingredients or finished products, he could use his ninja tools to hide them, like using a scroll to store everything so it looks like he's just carrying a normal scroll.
A practical answer is Chapter 38, because it turns the idea into a concrete scene. The chapter opens with Jiang Li had also observed the girl who had just entered., adds pressure through When did Jiang Li become so rational and composed?!, and ends on He Yun coldly turned his head and continued to.
A practical answer is Chapter 86, because it turns the idea into a concrete scene. The chapter opens with After over an hour of fuss, it was finally time to eat., adds pressure through Having tasted the tomato and eggs again, Wen Jiaojiao sighed in relief,..., and ends on But then her expression.
If you want the clearest chapter reference, go to Chapter 43. Early on, The moment He Yun willingly sat next to Jiang Li and even took off his...; later, the chapter leans on Movie Emperor He, where's your aloof persona?" "Waaah, He Bao, Mommy....
Chapter 64 is the strongest chapter-level answer because it starts from Chixia Village lay in tranquil slumber. and follows through on He'd been a host for so many years; he was used to it..
The best chapter pointer here is Chapter 39, "Is This Book an Out-of-Print Buddhist Scripture?!". It opens with Qi Tianyu had been looking forward to watching Jiang Li's drama unfold. and closes on His original intention was just to make Jiang Li back off gracefully,....
Look to Chapter 55 for the clearest answer. It begins with Su Yinwan hadn't expected that, in just one day, Jiang Li's reputation had..., keeps building through Yet she was clearly the wretched cannon fodder of this book., and lands on He Yun's fans were immediately displeased..
Look to Chapter 80 for the clearest answer. It begins with Jiang Yan and Wen Jiaojiao, one so smug he was almost ascending to the..., keeps building through And this was exactly the scene Director Sun wanted to see., and lands on arrogant princess with Princess Disease, I'm totally for it, fam.].
If you want the clearest chapter reference, go to Chapter 28. Early on, The next evening, Jiang Yan drove home seething with rage.; later, the chapter leans on Before he even entered the dining room, he shouted angrily, "Lili, you did....
If you want the clearest chapter reference, go to Chapter 86. Early on, After over an hour of fuss, it was finally time to eat.; later, the chapter leans on Qi Tianyu, starving, crazily scooped up his curry rice into his mouth..
A practical answer is Chapter 62, because it turns the idea into a concrete scene. The chapter opens with Sitting on the edge of her bed, she pondered for a while before lifting..., adds pressure through And it had been seven days since his last dose., and ends on Jiang Li reached in, pulled out a.