Curd-Churned or Cream-Separated: The Two Ways Ghee Is Made
Ghee is made through one of two primary processes: either by culturing whole milk into yogurt and churning it into butter (the curd-churned method), or by mechanically separating raw cream directly from milk and simmering it (the cream-separated method).
How Does the Curd-Churned Bilona Process Work?
The curd-churned method is the traditional Indian technique practiced for generations in rural households. Whole milk from indigenous Gir cows is boiled, cooled, and inoculated with curd culture. As the milk ferments overnight, natural enzymes break down lactose into lactic acid. The whole curd is then churned bidirectionally with a wooden bilona. Soft butter floats to the top, leaving behind fresh buttermilk (chhas). The gathered butter is slowly clarified over low heat, allowing water to evaporate and milk solids to brown gently at the bottom of the pan before being strained out.
What Is the Industrial Cream-Separation Method?
The cream-separation method was developed for large-scale industrial dairy processing to maximize efficiency. In this modern setup, fresh milk passes through a high-speed mechanical centrifuge that instantly splits raw cream from skimmed milk. The separated cream is gathered and immediately heated to high temperatures to evaporate moisture and turn the fat into liquid ghee. This bypasses the overnight fermentation step entirely, saving time and labor while producing large uniform quantities of clarified fat.
How Do These Two Making Methods Compare?
While both methods result in clarified butterfat, their preparation steps yield very different culinary characteristics in the final product.
| Process Step | Curd-Churned (Bilona) Method | Cream-Separated Method |
|---|---|---|
| Initial Preparation | Ferment whole milk into curd overnight | Separate raw cream from fresh milk instantly |
| Churning Technique | Bidirectional wooden churner (bilona) | Industrial centrifuge spinning |
| Byproduct | Nutritious cultured buttermilk (chhas) | Industrial skimmed milk |
| Digestive Profile in Traditional Cooking | Light, fermented, easily assimilated | Heavier fat profile without fermentation |
| Kitchen Characteristics | Granular grains, nutty aroma, high smoke point | Uniform texture, mild milk aroma |
Which Method Fits Traditional Indian Cooking Needs?
For daily Indian kitchen dishes like khichdi, phulkas, dal tadka, and festive halwa, curd-churned bilona ghee brings a depth of flavor that cream-separated ghee simply cannot match. The subtle acidity from fermentation balances the richness of the fat, making it a soothing addition to everyday meals while staying faithful to traditional culinary practices.