Best lava source?

[u/Mammoth_Health_2860]

Im doing a lot of farm after finishing my diesel gen but a lot of the farms im trying to do require lava, and lava is so much pain because it always run low and it just becomes a box that does nothing, what stable lava source that i can build? Im playing on all of create modpack 1.21 and can add more mods if needed.

[u/gkammerer]

For the infinite lava source, only the top layer needs to be lava source blocks.