Which method of meth production is noted as being the most scientific and time-consuming?

The method of meth production noted as the most scientific and time-consuming is the P2P (Phenyl-2-Propanone) method. This process requires a deeper understanding of organic chemistry and involves more complex chemical reactions compared to other methods. The P2P synthesis typically uses precursor chemicals that can only be derived through precise chemical processes, making it not only time-consuming but also demanding in terms of scientific knowledge and laboratory equipment.

Additionally, the emphasis on scientific principles and chemical reactions in the P2P method contributes to its designation as the most involved method of meth production. Unlike less intricate methods that might rely on readily available over-the-counter items or simpler chemical combinations, the P2P process necessitates a controlled environment and a greater manipulation of chemical properties, thereby increasing both the complexity and the time required to effectively synthesize methamphetamine.