How to cook a tube of polenta?

i love polenta..in the Caribbean it is called funchi..i buy corn flour in the spanish section of a supermarket..yellow. it is about 1.80 to 2.10 for a bag.. boil several cups of water or a broth..add flour ..stirring..use a whip and add flour in-till thickened...turn burner to low..and stir..add butter or margarine...i use a stick of butter..little at a time..i myself add hot pepper flakes and sometimes cut okra like in the islands. place on warm for 15-30 minutes..it is so good..or pour into grease pan and cool and let thicken..in italy..many have with tomato sauce..i like it hot and fresh made with fish and yucca.polenta is a side dish..its expensive in a tube.i plop butter on top..its so good with okra!..in cuba it is made with pork rinds or pork.. called foo foo...SO GOOD!