Take all purpose flour in a big bowl .
Add salt to it .
Mix It nicely with your fingers.
Add oil to it . Mix it nicely with your fingers and palms for 7-8 minute.This step is crucial for flaky crispy outer shell without any bubbles.Don't skip it at all.
Now Start adding water to it . You won't need much water . Make a really tight dough and without putting much wter make it smooth . It will take 3-4 minutes.
After making a smooth dough ball, cover it with a damp kitchen towel.
After 20 minutes Make 6 medium size dough balls out of it.
Roll 1 ball into a big round shape . Disc shouldn't be too thin.
Make a thick liquid of 1 tbsp all purpose flour with 2.5 tbsp of water.
Cut the disc into 2 parts with the help of a sharp knife.
Make shell of samosa with one half of a disc and fill it nicely with Your choice of noodle /Schezwan Noodles.
Close it with help of the thick liquid we have made.
Make all the samosa with same process.
Take a big wok.
Fill it with oil for deep frying the Samosa. Alternatively you can do it on 370 for 8-10 minutes. Time can vary on your air fryer.
When oil is hot ,drop a few samosa in it .
Keep the flame very low .This is the key of crunchy and flaky samosa .
Fry it till it looks light golden brown.
Drain it on a paper towel. Serve it with a sauce of your choice.