Rinse the banana leaves and remove the thick rib. Pass over a flame to soften, then cut into rectangles (6x8-inch).
Mix the glutinous rice flour, ube, coconut milk, sugar, vanilla extract, ube extract, and salt into a thick paste.
Lightly grease each banana leaf with the coconut oil from the latik. Add about 3 tablespoons of mixture, then shape into a log. Sprinkle with latik, then roll and fold to seal.
Steam over medium heat for about 30 minutes, or until firm and cooked through.
Cool slightly before unwrapping. Top with more latik, or enjoy as is.
Notes
Glutinous rice flour: Also called sticky rice flour or malagkit; gives suman its chewy texture.
Ube: Use fresh or frozen ube. Purple sweet potato also works. If using ube halaya, reduce the sugar by ¼ cup.
Tips for Making Ube Suman
Soften the banana leaves: Pass over a flame so they fold easily.
Grease lightly: A little coconut oil helps prevent sticking.
Don’t overfill: Leave space so they’re easier to wrap.
Cool slightly: Let the suman set before unwrapping.