Roast the sesame seeds in a dry frying pan. Let cool on a cool and dry surfaceR
Heat the milk with the sesame oil. When the milk starts to boil, sprinkle in the cornmeal, stirring vigorously. Let it cook for 6 minutes while stirring.
Then sprinkle in the toasted sesame seeds and mix by stirring well.
Place a sheet of baking paper on the work surface. Pour over the polenta and cover with another piece of baking paper. Roll it up to a bar of 2 cm in diameter. Then set aside to cool.