You can get spices in many way including by opening chests, and gifts, completing quests, and clearing away obstacles like wooden barrels, fallen trees, bushes, and wooden boxes.
Clearing away seaweed can also sometimes get you spices, as well as XP and energy. Remember, if you run out of seaweed on the beach on Home Island, more will regenerate after some time.
One of the most important effective ways of getting spices is to fulfill Dragon Mysterium requests – this will get you more spices than clearing seaweed. But it will take you some time before you unlock the Dragôn Mysterium so at first, seaweed is a good bet.
Once you have some spices you can use them in various ways including by making food at the Mixer, the Fireplace, and in the Kitchen.
To learn more about resources and where to find them, check out our Resources section.