Why does this milk take a long time to set as curd ?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Process of Curd Formation:**
- Milk is converted into curd through the action of bacteria, specifically lactic acid bacteria. These bacteria ferment lactose (the sugar present in milk) to produce lactic acid.

2. **Role of Lactic Acid:**
- As the bacteria act on the milk, they produce lactic acid. This acidification process is crucial for the transformation of milk into curd.

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