We heat the oil in a pan with the peeled garlic cloves until they turn slightly brown. Then we add the cod, turn off the heat and let it cool down. Next, we blend it in a Thermomix with the brandy until it becomes a smooth brandade.
Slice the fennel very thinly and sauté in oil and salt until soft.
Place in a deep dish with the brandade on the bottom and the fennel on top. Add a good splash of oil.