Take a bowl and add the roasted red rice flour and roasted plain flour
Boil the water and add salt to it. Add the salted hot water to the flour mix little by little. Mix them up well before the heat goes down.
Knead the dough using a spoon until all combined well enough.
Now, fill a small portion of dough inside the string hopper press unit.
Then, press both handles to squeeze onto the string hopper mats.
Now, boil the water in a string hopper steamer and place the string hopper mats inside the steamer.
Cook them covered well enough. For me, it takes about 3 minutes to cook.
Once done, remove the string hoppers from the string hopper mats.
This is how to make string hoppers at home with the combination of red rice flour and plain flour. Serve and enjoy these string hoppers with some good curries.
Notes
1. Both flours should be fine and free-flowing without clumps.
2. If the hotness gests down from the dough, you may feel a little hard to squeeze the string hopper press unit. In such a case, add a little hot water and knead the dough again.
Recipe by Top Sri Lankan Recipe at https://www.topsrilankanrecipe.com/make-string-hoppers-homemade-recipe-red-rice-plain-flour/