sada dahi - dabba [300 grams]tok doi is also known as sada dahi or khatta dahi in hindi is a fermented milk product made from warm milk and a bacterial yogurt starter. it has probiotic qualities and is good for the gut. after the fermentation process, the consistency of the flowing milk gradually transforms to a thick wobbly pudding like texture. due to the bacterial fermentation, the final product also has a tangy taste.