Matcha Butter Mochi

Bahan-bahan (24 porsi)

• 4 Tbsp matcha (ceremoial or culinary grade)
• 1½ sticks unsalted butter ((12 Tbsp; plus more to grease the baking dish))
• 1 lb mochiko (glutinous rice flour/sweet rice flour)
• ½ tsp baking powder
• 5 large eggs (50 g w/o shell) ((at room temperature))
• 2 cups sugar ((I used organic cane sugar))
• ½ tsp Diamond Crystal kosher salt
• 1 (13½-oz) can unsweetened coconut milk ((full fat; see Notes))