Blend the first 8 ingredients in a blender until frothy. It will take 2 to 3 minutes to froth well. Taste and adjust salt(kala namak or plain salt). Add a pinch of sweetener if needed.
Pour into glasses. Press mint leaves between your fingers to release a bit of flavor and add as garnish. Sprinkle with ground cumin.
To make your own non dairy yogurt: If using higher fat non dairy milks like soy milk and cashew milk, boil the non dairy milk, cool to warm, add yogurt starter or probiotics and mix in. Cover and let it sit for 8 hours in a warm place. For thinner non dairy milks like almond, you will have to thicken it with a bit of starch and cashews blended in. Then boil, cool and add starter.Nutritional values based on one serving