In a small jug,add lukewarm water,caster sugar,instant yeast and mix well,cover & let it rest for 5 minutes.
In a bowl,add all-purpose flour,salt,baking soda & mix well.
Add yeast mixture,gradually add milk,mix well & knead until dough is formed.
Add cooking oil and knead dough again,cover & let it proof for 1 hour (warm place).
Sprinkle dry flour and knead until dough is smooth.
Take a small dough (175g) and make a ball,sprinkle dry flour & flatten the sides of dough by pressing it with the help of hands.
Add prepared creamy chicken filling in center (2-3 tbs),fold all the edges to seal the filling,pinch & seal the edges.
Sprinkle dry flour & roll out gently with the help of rolling pin.
Apply milk with the help of brush & sprinkle sesame seeds.
Now flip the naan carefully & apply salt water on one side of rolled dough with the help of hands.
Heat griddle on medium flame, place naan (wet side down) & cook on low flame until it starts to bubble & bottom has browned then flip the griddle & cook other side directly on the flame until it turns brown or charred.
Apply butter on top side (makes 4).
Serve creamy tikka reshmi naan with raita.