The Iksaltari Archipelago has three magic systems, all distinct and variously unrelated.
Divine magic, although it is not referred to as such, is how the gods power the natural cycle. They gain a nebulous energy from the flow of things and use it to aid said flow. Think of a kid on a roundabout kicking the ground to go faster and faster, increasing the kinetic energy. It's essentially that, only it means gods can do whatever they want.
Spirit magic mostly revolves around weather-manipulation. It's contained inside the body and released into the air. It can also be used for minor nature augmentations, enforcing pressure on the surrounding environment to react in ways already possible. For example, an OG spia could make a fruit fall from a tree but couldn't set the tree on fire. Humanity is unaware of this and believes their magic to be the same as the final type.
Human magic, which is entirely superstition and not real, is based around cooking. It's founded in the concept that eating certain compounds affects your body and therefore also your spiritual self. Theologically, human magic is said to stem from the vengeful god Kir and that's why it's so hit and miss. It works to the degree you'd expect of a placebo.
Magic in the archipelago, although not the traditional high fantasy style with wands and fireballs, is intrinsically linked to the daily life and beliefs of its people. It mostly takes the form of small household rituals, such as sewing protective runes into clothing to ward off danger or mixing certain herbs together to create an incense said to attract luck. Supposedly, archivists use large amounts of magic to maintain their immortality and that is why they cannot use other magic themselves.
Honey has healing properties and can reverse previous magics. Cream has transformational properties and creates similarities between the caster and the target for good or for ill.
Salt is often used in these rituals to represent raw power and is associated with more aggressive forms of magic; eating salty foods is common before any great undertaking.
Cinnamon represents warmth and kindness and can persuade others to be friendly towards the caster.
Saffron is used to protect secrets by distracting and redirecting others and is used in both spells intended to send a loud message and spells designed to hide things.
Cardamom is used in spells that are more practical than flashy and holds other ingredients together.
Bergamot is associated with winter and cold and is often taken on voyages to prevent food from spoiling. Rosemary is used for sight-based spells and is said to give the caster good dreams.