Mix sugar into the lukewarm water and then add instant yeast .Mix it and keep it aside. (If you are using dry active yeast . Still you need to follow this process.
Take a big bowl add buttermilk to it .
Add sugar ,salt melted butter and mix it well.
Add baking soda to it .Mix it well.
You need to add yeast mixture (liquid yeast mixture) to it .Stir it .
Add flour .
If you are using stand mixture ,mix it on a low speed for a soft supple dough.
If you are using your hands use some elbow grease and knead the dough nicely .
If you need, you can use little bit of extra flour(which we have kept for dusting ).Make a soft supple dough by kneading it for around 8-10 minute.
Cover the dough with a damp kitchen towel or cover it with a plastic wrap.
Keep it aside for proofing.
If the weather is warm it will take less time if its cold then it will take more time to proof .
I used Instant pot to proof my dough and it took me just an hour on yogurt mode .
After its proofed punch the dough down and knead it on a lightly floured surface.
Cut it in to half and and then again half .Make 20 or 24 small balls by tucking the dough .
Remember they are looking small now but after second proof and baking they will be big . So do not panic.
Place them in a baking tray and keep them for second proof for around 15-20 minutes.
Preheat the oven at 375 f.
Once the oven is hot brush your buns with melted butter and bake .
It will take around 20-22 minute to bake the buns.Keep an eye they need to look just light brown .Time can vary depending on your oven .
Remove it from the oven and let it cool on the wire rack .
Your Eggless Ladi Pav /Dinner rolls /Buns are ready to use.
