In a large bowl mix together ½ cup of regular rice flour, ½ cup sweet glutinous rice flour and ¼ cup sugar.
Add the 1 ⅓ cup of milk and mix well again until there are no lumps.
Add in the 2 teaspoons of lye water. Mix well again.
Pour into silicon molds and arrange on a steamer basket. Fit as many as you can on the steamer basket without crowding them.
Line the lid of your steamer with a kitchen towel so that the condensation doesn't drip on to the Kuchinta. Pour 1 cup of water into your steamer and steam for 20 minutes.
Once it has steamed you can see the color has changed from light yellow to a super dark orange.
To remove from the mold, place the steamed Kuchinta in the freezer for about 10 minutes and unmold. Place on a platter to serve.
Fill up the steamer again with 1 cup of water and steam the remaining Kuchinta batter. Repeat the steaming process until all of the batter is cooked.
Serve with Ube Cookie butter and black sesame seeds on the side.