These recipes produce more of an item than they use, so feeding part of the output back in grows your supply.
Alaindustrial · Mutation duplicate · From Ala Industrial
Its other inputs are renewable, so this loop gives an unlimited supply of Potato.
Create_cultivation · Cultivating · From Create: Cultivation Craft
Its other inputs are renewable, so this loop gives an unlimited supply of Potato.
Mechanical_botany · Insolating · From Create: Mechanical Botany
+ minecraft:water
Its other inputs are renewable, so this loop gives an unlimited supply of Potato.
Minecraftcontentexpansion · Greenhouse · From MinecraftContentExpansion
Its other inputs are renewable, so this loop gives an unlimited supply of Potato.
Voluminousenergy · Hydroponic incubating · From Voluminous Energy
Its other inputs are renewable, so this loop gives an unlimited supply of Potato.
Mechanical_botany · Insolating · From Factorio Nuclear +ONLINE (OxMODPACK)
+ minecraft:water
Its other inputs are renewable, so this loop gives an unlimited supply of Beetroot.
Crafting Table · 
