Adding vinegar to the boiling water when parboiling potatoes is a great tip for making crispy fries. The acidity of the vinegar helps the potatoes maintain their structure, preventing them from breaking down too much during the boiling process. This results in a firmer exterior, which, when fried, turns extra crispy while keeping the inside fluffy and tender.
Here’s how you can use this tip:
1. **Cut the potatoes** into your desired fry shape.
2. **Boil the potatoes** in a pot of water with a few tablespoons of vinegar (white vinegar works well) for 5-7 minutes, just until they’re slightly tender but not fully cooked.
3. **Drain and dry the potatoes** thoroughly.
4. **Fry or bake** them until golden and crispy.
This method helps achieve that perfect combination of a crispy outside and soft inside for your fries!