Peel the skin of the raw bananas and slice them using a slicer (mandoline slicer)and immerse it in salt water for 10 minutes.
After 10 minutes, take out the slices and pat dry in a kitchen towel.
On the other hand heat the oil for deep frying.
When the oil is hot, carefully put in the dried and sliced raw bananas.
Fry it in batches. Do not put too much at a time. Also carefully put them and ensure everyone is separate.If the raw banana slices are together then it will get cooked evenly and will become soggy.
When the sizzle sound of the oil subsides, take them out and drain it in a kitchen towel.
Repeat this for the rest of the slices.
Transfer it to a wide airtight container. Add pepper powder and chilli powder. Do not add salt as we added while immersing them in water.
Shake vigorously for even mixing of spices.
Enjoy crispy Vazhakkai chips with Rice and sambar or with tea/coffee.
Just before frying take out the sliced raw bananas from water and pat dry. Else the color will become dull.
After frying and draining the excess oil in the kitchen towel, a minute later transfer it to a air tight container. Repeat this for all the batches . If the chips stays outside till the entire batch gets over it will loose its crispiness.
For a healthy version you can bake it instead of frying.