I listed substitutions for the few Indian ingredients you need, but it's really worth it to pop over to an Indian grocery if you have one -- especially for curry leaves and sev. The whole recipe is super quick -- about 20 minutes, flat -- so prepare your mise-en-place ahead of time (have everything set out.)
Thanks to

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To read about the 5 stages of holiday grocery shopping grief, follow my quest to find golden raisins (you'd think that'd be a relatively simple ingredient to find for this recipe, right?!), and see more chivda photos, please head over to Willow Bird Baking!
x-posted to food_porn, picturing_food, bakebakebake, cooking