Arbol de la vida in miraflores next to the saturday bioferia has kombucha drink but you might want to call them to find out if it's in stock or perhaps they can point you to the right direction. Their location is https://www.google.com/maps/place/Maria ... a7010434c8
and their website is http://www.arboldelavida.com.pe/
Today I literally just deleted a high quality milk kefir I was going to buy on my amazon shopping cart as I don't think it would survive the long shipping time.
I remember finding many people selling kombucha mothers online through olx, regardless though just type in "kombucha lima peru" in google and you should get some people selling their personal batches as I tried finding a while ago and stores don't sell them to my knowledge.
Also kefir grains here I have never found particularly online.
If you find any good milk kefir grains I would like to buy some as well so let me know.