Board Thread:Boruto Discussions/@comment-28939725-20161229141529/@comment-25122992-20170102165706

There must've been some way. I mean, the production of the chakra pills was mentioned by Momoshiki as a prominent trait of their clan. Technically, Momoshiki turned Kinshiki into one big chakra pill (or several pills in the novel), the same way as he created the regular pills from Bee's chakra. It seems that he did it via the Rinnegan, yet Kinshiki didn't possess it and there's no quarantee his ancestors possessed. Thus some technology which didn't involve the Rinnegan must've existed.