In a medium bowl, stir together the flour, salt, water and oil, until mixture pulls away from the sides. Turn the dough out onto a well floured surface. Knead until smooth and pliable for 10 minutes.
Preheat an unoiled frying pan to medium heat.
Divide dough into 12 equal parts, form into rounds and cover with a damp cloth. Flatten balls with palm of your hand, then use a rolling pin to roll out each piece into a 15cm-20 cm round.
Check the roti for 1 minute before turning over then turn again after another minute. The roti should have some darker spots when finished. Best served warm.