Carefully pull down the corncob leaves, but do not remove them. Remove fibers. Brush the piston with oil, pull the leaves up again and tie them tight. Cook in a hot oven at 180 - 200 ° C top / bottom heat until the leaves are almost charred. Loosen the piston from the leaves.
Mix half of the butter with the chopped herbs, a little grated lemon zest and salt to make herb butter.
Mix the other half of the butter with paprika powder, ketchup and salt to make tomato butter.