1. Pour a proper amount of sunflower seed oil into the pot, and then pour in dried corn kernels, which need not be washed.
2. Cover the pot and cook for 1-2 minutes. You can see the corn kernels jumping and blooming in the pot.
3. When the noise in the pot abates, turn off the torch and stir the sugar evenly, and then take out the popcorn for later use.
4. Put butter and sugar in the pot, melt it to brown over medium heat, then turn off the heat and add the popcorn that was popped before.
5. Stir well and enjoy.