01 -
In a microwave-safe bowl, combine glutinous rice flour, cornstarch, sugar, coconut oil, and milk. Microwave on high in 30-second intervals, stirring between, until the mixture becomes translucent and sticky, approximately 1.5-2 minutes total.
02 -
Dust a clean surface with cornstarch, transfer the mochi mixture onto it, and allow to cool. Divide the mochi into 12 equal portions and shape into balls.
03 -
Grind loose Thai tea leaves into a fine powder using a spice grinder or mortar and pestle. Sift to remove coarse particles.
04 -
Heat milk gently until warm, add Thai tea powder, and steep for 10 minutes. Strain through a fine sieve and discard solids.
05 -
In a medium bowl, whisk together flour, baking powder, and salt until evenly combined.
06 -
In a separate bowl, whisk melted butter, sugar, egg, vanilla extract, and infused milk until smooth.
07 -
Gradually mix dry ingredients into wet ingredients until just incorporated, avoiding overmixing. Cover and chill the dough for a minimum of 2 hours.
08 -
Preheat oven to 175°C. Flatten a dough portion in your hand, place one mochi ball inside, then seal completely. Roll the stuffed dough ball first in granulated sugar, then in powdered sugar, ensuring full coverage.
09 -
Arrange coated cookies on a parchment-lined baking sheet, spaced evenly. Bake for 11-13 minutes or until edges are set but centers remain soft. Allow to cool slightly before serving.