Aka reduced plant blood, juices from rotten blue agave, and juices from rotten oranges, and water.

Simplified to more dirt, water, light, and air.

Though that dirt can also be simplified to minerals, other elements, water, light, and air.

Ah screw it, let's keep going and simplify it all to hydrogen. You can add some trace amounts of helium and lithium, but it isn't necessary as long as you add enough hydrogen (but it's a LOT).