Hand-stretched artisan flatbread baked against the searing clay walls of the tandoor, brushed with golden butter and fresh herbs.
Blend the mint, coriander, green chilies, and ginger with 1/2 cup of the water into a fine paste.
Press the paste through a sieve into a large bowl, extracting as much liquid as possible.
Add the remaining water, lemon juice, cumin powder, black salt, and chaat masala and whisk well.
Refrigerate the pani for at least 30 minutes so the flavours meld.
Serve cold in glasses for dunking puris filled with spiced potato or sprouts.