Combine the yeast and sugar with the warm water. set aside for 10 min to activate the yeast.
Mix the salt with the flour in a large bowl. Add the yeast mixture.
Mix the yoghurt, vegetable oil and warm milk thoroughly. Then add to flour and yeast mixture. Stir well till the dough comes together.
Knead till smooth for about 4-5 minutes. Add a little extra flour if it's too sticky.
Place into oiled bowl and cover. Leave to rise for 1 hour.
Gently melt the butter in a saucepan and add the garlic and coriander.
Pat down the dough and divide into 8-12 pieces. Roll to ball and then roll the balls to an oval shape about 3-4mm thick
Cook first side in a non stick frypan on medium-hight about 2-3 minutes till bubbles form on surface. (If you get two frypans going it takes half the time to get through the dough.)
Brush well with the melted butter mix then flip and cook second side.
Remove from heat and cool to freeze or eat straight form the pan.