In a medium-small pot, heat the milk and water until boiling.
Add the farro, cinnamon, cardamom, and salt. Stir, then bring to a simmer.
Cover and simmer over low for 25 to 30 minutes, or until just tender and most of the liquid is absorbed.
Remove the lid, add the diced persimmon, then occasionally stir the farro for 5 minutes over medium-low heat.
Remove from heat, stir in the vanilla, then spoon into a bowl. Top with remaining persimmon, maple syrup, and almond butter, if you wish.