Peel raw (green) bananas and slice them thin using a slicer.
Keep the slices in salt water for 5–10 minutes to prevent discoloration.
Heat oil in a deep pan for frying.
Drain banana slices and pat them dry with a cloth.
Fry the slices in hot oil on medium flame until crisp and golden.
Stir occasionally to ensure even frying.
Remove and place on tissue paper to absorb excess oil.
Sprinkle salt or spice mix.
(Optional) Add a pinch of powdered cardamom for a mildly sweet aromatic flavor.
Let them cool completely before storing in an airtight container.