Gather your ingredients.
Strain the milk with the help pf a fine mesh strainer to prevent unwanted solids from passing through.
Heat the milk by warming it slowly to 93–95 °C for 15 to 30 minutes.
Cool down to 45-46°C by using your sink filled with cold water.
Ad your culture. Either add a spoonful (about 50 g) of live Bulgarian yogurt from a previous batch (this amount is for about 500 mL of raw milk) or use the amount of freeze-dried culture recommended by the producer (for 1–2 L, the amount should be at least10⁸–10⁹ live cells per gram)
Incubate by Keeping your jars warm (around 44 °C ±2 °C) for 4–8 hours until the milk thickens into yogurt. A yogurt maker, warm oven, or insulated cooler can help.