Try this Making Dahi without starter recipe, or contribute your own.
Standard yogurt production relies on established bacterial strains from previous batches, but isolated acids or wild microbes on chili stalks can initiate coagulation under specific thermal conditions. Acid precipitation alters milk protein structures directly, whereas botanical vectors introduce ambient lactobacilli. Temperature control dictates success here; milk heated beyond 45 degrees Celsius kills desired microbial activity, while liquids below 35 degrees Celsius fail to activate setting enzymes efficiently.
Submerged chili peppers with intact stems must remain undisturbed in lukewarm dairy for 10 to 12 hours. Maintaining complete submersion prevents surface film formation that blocks microbial inoculation. Once initial acidic starters form, incorporating two teaspoons per liter of fresh lukewarm milk yields standard dahi within six to seven hours. Excessive inoculation accelerates acidification, producing a grainy texture and overly sharp flavor profile.
Finished dahi functions effectively as a base for spiced raitas or rich gravies where high acidity cuts through heavy fats. Proper refrigeration extends usability once the primary set completes.