Making potato rosti is straightforward, but attention to detail is key to achieving the perfect texture and flavor. Follow these steps to create a crispy and flavorful rosti:

1. Prepare the Potatoes:
   • Wash and peel the potatoes.
   • Grate them using a coarse grater or a food processor.
   • Place the grated potatoes in a clean kitchen towel and squeeze out as much moisture as possible. This step is crucial for achieving crispiness.
2. Mix the Ingredients:
   • In a large mixing bowl, combine the grated potatoes, chopped onion, parsley, chives, thyme, salt, pepper, and flour.
   • Mix until all ingredients are well incorporated.
3. Form the Rosti:
   • Divide the mixture into equal portions, depending on the desired size of your rosti.
   • Shape each portion into a flat, round cake.
4. Cook the Rosti:
   • Heat the vegetable oil and butter in a large non-stick skillet over medium heat.
   • Once the oil is hot, carefully place the potato cakes in the skillet, leaving enough space between them.
   • Cook for 4-5 minutes on one side until golden brown and crispy.
   • Flip the cakes and cook for another 4-5 minutes on the other side.
   • Transfer the cooked rosti to a plate lined with paper towels to drain excess oil.
5. Serve:
   • Serve the rosti hot, garnished with additional fresh herbs if desired.