Thandai masala: blanch 1/2 cup almonds, peel, wipe and set aside. In a small blender jar (I used the vitamix small one), mix together 2 Tbsp. dried rose petals, 2 Tbsp. fennel seeds, 2 Tbsp. melon seeds, 2 Tbsp. white poppy seeds, 11/2 tsp green cardamom pods, 1/2 tsp black peppercorns, 1/4 tsp saffron threads, 1 1/2" cinnamon stick, small pinch of kosher salt. Grind into a fine powder. Remove into a bowl. Grind 1/2 cup cashews, 1/4 cup pistachios and the 1/2 cup blanched almonds into coarse powder. Mix everything and store in an airtight container. Cake: Preheat oven at 350, and spray 9X9 inch square pan with baking spray. Cream together 1 stick of unsalted butter, 3/4 cup sugar. Add 2Tbsp vegetable oil. Add 2 eggs, 1/2 cup sour cream, 1 tsp vanilla, 1/2 tsp almond extract. Add 13/4 cup AP flour, 11/2 tsp baking powder, 3/4 tsp baking soda, 3/4 tsp kosher salt. Add 1/2 cup whole milk, and mix until batter just comes together. Add 1/4 cup Thandai masala and mix until i...