From Nancie McDermott's Real Thai: The Best of Thailand's Regional Cooking. If you want to save time you can grind the spices and combine the rest using a food processor instead of a mortar. I have been using this recipe lately and with the exception of the fresh lemongrass (you can substitute 4 tsp dried) all of the ingredients are easy to find. I sometimes also substitute a little lime juice for the peel and green onions for the shallot. You can also roast batches of seeds ahead of time--just don't grind them until you're ready to use them.