Put the leaves in a bowl of water and set it aside to soak for 30 minutes.
In a separate bowl, add the water and enough food coloring to make it pale to medium pink. Add the domyojiko and stir. Set it aside to let the domyojiko soak and hydrate for 10 minutes.
While the domyojiko soaks, heat up your steamer.
When the steamer is ready, line it with a cheesecloth and put the soaked domyojiko on top. Put the lid on and let it steam for 12 minutes on high heat.
While the domyojiko steams, divide the sweet red bean paste into 8 portions, and roll each one into a ball.
Once finished, take the steamed domyojiko out into a clean bowl. Add the sugar and salt, and use a silicone spatula to fold it into the domyojiko. Set it aside to cool a little.
Rinse the soaking leaves and pat them dry. Trim the excess stems.
Separate the steamed domyojiko into 8 portions. Wet your hands, take one portion of domyojiko on your palm and flatten it. Add a ball of red bean paste to the middle and enclose it with the domyojiko. Shape it into a slightly oval circle, and wrap it with a leaf, making sure that the leaf veins are on the outside.