In a large pot, heat the corn and olive oil. Add the corn kernels. When the oil is very hot, the corn will start to pop. Shake the pot frequently to avoid burning. When the popping has stopped, the popcorn is finished.
Transfer to a large bowl and season with salt, pepper, rosemary, and butter. Try to serve warm.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.