Peel the raw bananas and slice them thinly using a slicer for even, crispy chips.
Mix turmeric powder and salt in water. Soak the banana slices in this mixture for 10–15 minutes to enhance flavor and color.
Drain the water and spread the slices on a clean cloth or paper towel to remove excess moisture.
In a deep pan, heat coconut oil or any vegetable oil on medium flame. Ensure the oil is hot but not smoking.
Drop the slices carefully into the hot oil in small batches. Stir gently to prevent sticking.
Fry the chips until they turn golden and crisp. Remove them using a slotted spoon and drain excess oil on paper towels.
Allow the chips to cool completely before storing them in an airtight container to retain crispness.