If you can't find kasoori methi, the best substitute is dried fenugreek leaves. You can also use a combination of dried parsley and celery leaves as an alternative.
Kasoori methi, or dried fenugreek leaves, adds a unique slightly bitter and aromatic flavor to chicken curry. It's often used to enhance the overall taste and aroma. If you can't find it locally, here's a breakdown of why the suggested substitutes work:
Dried Fenugreek Leaves: This is the closest substitute because it's simply the same ingredient in a different form. If you have access to regular dried fenugreek leaves (not kasoori methi specifically), use them! Start with about half the amount called for in the recipe and adjust to taste. Toasting them lightly in a dry pan before adding them to the curry will enhance their flavor.
Dried Parsley and Celery Leaves: This combination mimics the slightly bitter and earthy notes of kasoori methi. Use equal parts dried parsley and dried celery leaves. Start with about half a teaspoon for every tablespoon of kasoori methi the recipe calls for, and adjust to taste. This is a good option if you need a substitute readily available in most supermarkets.
Maple Syrup or Brown Sugar (Pinch): While not a direct flavor substitute, a tiny pinch of maple syrup or brown sugar can help balance the flavors in the curry if you're missing the slight sweetness that kasoori methi contributes. Be very careful not to add too much, as it can easily overpower the dish.
Always crush the dried fenugreek leaves (or your chosen substitute) between your palms before adding them to the curry. This releases their aroma and flavor more effectively.