Served with a dollop of butter on top, with makki ki roti (a flatbread made with maize flour) and a little piece of jaggery on the side.
Adding spinach ameliorates the sharpness of the mustard greens.A final pat of salted butter on top adds richness and salt.
Sarson ka saag is the ultimate comfort food, and it recalls for me the bitterly cold winter months of northern India. Growing up in a Punjabi family, this was a dish that was often made for special occasions, like weddings that took place during the winter, but it was also made on weekends, too. "Saag" for me has always meant sarson ka saag, a dish traditionally made with mustard leaves and a mix of a few other greens, like spinach, fresh fenugreek leaves, and bathua . And sarson ka saag was always served with a dollop of butter on top, accompanied by makki ki roti, a flatbread made with maize flour, and a little piece of jaggery on the side. That's it; a complete meal, a complete celebratory meal, because saarson ka saag needs very little else.
Until recently, I had some difficulty finding mustard leaves in the UK where I live, although you can purchase them online. I found some when traveling to another town for work, and I was reminded of how distinctly delicious mustard leaves are: slightly bitter, creamy when cooked, with a sharp, mustardy bite. When preparing them, you don't want to add too much to get in the way of their flavor.
Once you've tried this recipe, you'll undertsand how different it is from the "saag" you might find at your local Indian restaurant. The flavor is entirely different, and the delicious greens have more substance and, consequently texture. In fact, the sturdy leaves are so fibrous it would be very difficult to turn them into a purée of any kind.