I've spent some time trying to make a good tanduri nan, but so far it eludes me. This is based on what I baked on 27 May 2016. I have an older and very different recipe here, and some old thoughts on the topic here.

This is what I did on the last occasion. It needs rethinking.

Ingredients

Preparation

I started with the starter and added flour and yoghurt until the mixture looked right. It was probably too moist. And next time I should look at the last attempt.

Spellings

I have three Hindi words to contend with here, and I think all three are transliterated incorrectly. It's important to note that letters are (almost?) never doubled in Hindi, so there should be a good reason to do it in the transliteration.

• Atta is आटा in Hindi, and it seems that it's pronounced with a long first A. Why not “ata”? This dictionary does not recognize the transliteration “atta”.
• “Nan” (from नान) was the only English transliteration until 1979. From 1979 it's predominantly (but not exclusively) naan. Only the spelling nan occurs in the entry for tandur. I can't see a good reason for the irregular spelling, so for me it's still nan. It's of Iranian origin; the normal Hindi word for bread is रोटी (roti), as noted above.
• Tanduri is तंदूरी in Hindi—maybe. That's according to this dictionary, which transliterates the Hindi word as “taṃdūrī”. I don't read Devanagari, but looking through the lists, I can't find any reference to the middle symbol दू; probably it's some compound that I can't derive. This dictionary spells it with a different middle symbol: तन्दूरी, and knows in only in the combination तन्दूरी रोटी (transliterated as “tanduri roTi”, where the T is voiced). So so far I'm confused, but at least the “oo” makes no sense.