For Harissa:. Toast caraway, coriander, and cumin seeds in medium skillet over medium heat until slightly darker in color, stirring occasionally. about 5 minutes. Cool completely. Grind cooled spices and dried crushed red pepper in mortar with pestle or spice grinder to fine powder. Add oil and garlic; grind to smooth paste. Stir in paprika and salt. (Can be made 3 days ahead. Cover and refrigerate.).