How do Fenugreek leaves form a coating on Potato while cooking them together (Aloo-Methi)?

I love cooking this. I use frozen methi leaves though. Much more convenient.

First heat oil in a pan.

Add turmeric, cumin, paprika, garlic powder, black pepper, and salt. (About a half teaspoon of each spice will do.)

Whirl the spices around in the oil, then add diced potatoes that have either been pre-boiled or cooked in the microwave.

When the potatoes have color, add the thawed methi leaves. They should sparsely cover the potato cube.