From the comments, I get that this is about cooking food for human(s) in batches. From the title, I thought of the "rocket science nerds" that are often mentio

From the comments, I get that this is about cooking food for human(s) in batches. From the title, I thought of the "rocket science nerds" that are often mentioned here, and guessed that this was about some DIY approach to producing small quantities of actual rocket fuel at home. That fuel would then be pooled in order to help with rocket engine testing and development. That felt cool, but I guess not, then. :)