I saw this sweet potato salad with lettuce and rocket leaves long ago in a magazine, it had a orange dressing if I am not mistaken but the combination kind of stuck in my head andI tried it with the hung curd dressing with flavoured with Indian spices and I think it gives me comfort in a lot of ways since it is probably closer in taste to the shakarkandi chaat I grew up eating. The slight bitterness of the rocket leaves is balanced very well with the sweet potato and even the child eats this salad with great enthusiasm. For this salad I also roast the sweet potatoes directly on the gas making the flavour even more comforting and stronger. You can choose to roast it in the oven if you want but do try the gas roasting to see how lovely it tastes. But whatever you do never boil the sweet potato, for me it is almost killing the poor vegetable when it can instead shine when roasted
Sometime ago when I was in Delhi for the JWMA event, I was talking to Amrita of LifeKiRecipe and she said she makes a similar salad and even does a little heeng-jeera tadka of to the salad, I think that would be fantastic as well and I will try it next time I make this salad.