Spice blends or dishes that use multiple spices particularly benefit from the blooming technique; for example, dishes from the cuisines of Mexico, the Middle East, North Africa, and India. If you’ve ever made a curry or a chili, you may have bloomed spices without even realizing it.
Just dumping and stirring a curry paste or a mix of powdered spices into the pot will result in a curry or a chili with a bland, musty flavor or texture, but cooking the curry powder or paste or the chili powder in fat before introducing other ingredients will bring out its warm notes and multi-layered flavors.