Now, grab a deep pot, like a "Gamla" or "Dekchi." I use my brass Gamla, which is perfect for making sinni.
Peel the bananas and break them by hand into this pot. For the amount of sinni I'm making, at least five bananas are needed, but I used nine for extra flavor. They also say it's best to use an odd number of bananas.
Using your right hand, mash the bananas until they are smooth.
Then, add 250 grams of sugar, or an equal amount of semi-liquid sugarcane jaggery (Akher Gur), and mix it thoroughly with the mashed bananas.
For extra sweetness, I added another 100 grams of jaggery, but this step is optional. If you choose to add more jaggery, make sure it's well mixed with the rest of the ingredients. This means I used 250 grams of sweetener for 250 grams of wheat, plus an additional 100 grams of jaggery.
Now mix in 250g of Atta- whole wheat flour to the mixture. You can also use all-purpose flour for this. Mix until it forms a dough-like mixture.
Next, add 250ml of uncooked, unboiled milk and mix thoroughly. You might need an additional 100ml of milk to achieve a semi-thick consistency. If you prefer a runnier shinni, simply add more milk.
Now, break 2-3 batasa into the mixture and stir them in.
Crumble 150g of Khowa or Mawa and add two-thirds of it to the shinni mixture. This step is optional; some people also include peda or sondesh.
If desired, now is the time to add two third of the shredded coconut and mix it in. You can also incorporate a little coconut water with the mixture.
Add two-thirds of the cashews, raisins, dates, and aamsotto pieces, then mix everything together.
If it's a tradition in your home, add a pinch of edible camphor and a quarter teaspoon of ghee, then mix well.