In a large bowl mix Sooji, salt and club soda until everything is well combined into a dough form. Cover bowl with a dish towel and let it sit for 10 - 15 mins.
Heat oil in a deep pot, you want to your oil to be hot.
On a large countertop surface, roll out your dough and use a small cookie cutter to cut out rounds. Drop a 4-5 puris into the oil and fry them for 1-2 mins until they puff up and are slightly golden brown. Repeat step until you no longer have dough left.
Store in an air tight container and enjoy!
Pani
In a food processor add cilantro, mint, serrano, garlic, lemon juice, black salt (sanchar) and salt. Blend everything together until you have a paste like consistency. Transfer into a large bowl and add the water. Refrigerate until ready to use.
Pani Puri filling (potatoes & chana)
Mix the cooked potatoes, chana along with the spices. Adjust spice level if you can't handle to much heat.
Assembly
Poke holes in your puri, fill with filling and dunk it into the pani (water). Enjoy!
Notes
I used Laxmi brand Sooji, can be found in any Indian grocery store.
Make sure when you roll out your dough, its thin and not to thick.
Oil has to be hot so puri can puff up, cold oil will result into flat puri's.
I usually make the water the night before, so a lot of the flavors absorb.
If dough is looking a bit dry add 1tbsp of club soda as you need to form a dough.