If you're in search of fiery flavor to kick up the heat in your kitchen, then look no further than Bhut Jolokia Ghost Peppers ($10-$40). The world's hottest pepper at the top of the Scoville scale is sure to ignite the flavor in your foods. It's available in a variety of forms, including dried chili, powder, crushed pepper flakes and even spicy watermelon candy. [source]