Isinglass is employed in

Options

A. Preparation of wines
B. Distillation of wines
C. Preservation of wines
D. Clearing of wines

Answer

### Step-by-Step Solution:

1. **Understanding Isinglass**:
- Isinglass is a substance derived from the dried swim bladders of fish. It is primarily composed of collagen, which is a type of protein.

2. **Identifying the Uses of Isinglass**:
- Isinglass is widely used for various purposes, particularly in the food and beverage industry. Its main use is in the clarification or refining process of beverages.

3. **Clarification in Wine Production**:
- In the context of wine, isinglass is specifically employed for the clarification or clearing of wine. This process helps remove impurities and sediment, resulting in a clearer final product.

4. **Evaluating the Options**:
- The question provides four options regarding the use of isinglass:
- A) Preparation of wines
- B) Distillation of wines
- C) Pressing of wines
- D) Clearing of wines
- Based on the understanding that isinglass is used for clarification, option D (clearing of wines) is the correct answer.

5. **Conclusion**:
- Therefore, isinglass is employed in the clearing of wines, making option D the correct choice.