You can freeze leftover handvo for upto 3-4 months. If you do not have handvo flour handy, you can dry roast 1 cup of short grain rice, 3/4 cup of toor dal and 1/4 or 1/8 cup of any other dals like chana dal, yellow mung dal, masoor dal, urad dal etc. Once dry roasted, let the rice-lentil mix cool down and grind it in coarse flour mix!