A Tomato Based Curry Paste. Aagrah Tarka. Creating an authentic Tarka base is Every Indian Chef's Secret . A true Tarka base requires knowledge, time, and expertise to select just the right blend of spices and ingredients, to roast and fry them so they sizzle and crack, releasing all their delicious oils and flavours, and to blend them with a perfect selection of ingredients to create your delicious jar of Aagrah Tarka paste. Aagrah Butter Chicken Tarka paste Indian Recipes Perfected in Bradford. Enjoy deliciously authentic Kashmiri cuisine within your own home. Think of it as the "Aagrah Restaurant experience". Originating from Delhi, India and developed especially by Aagrah, the Butter Chicken Tarka paste creates a rich, creamy, indulgent dish.