Grease the pan and line the base with paper. Grease the paper and coat it with flour. Heat the oven to 350°F/175°C. Sift the flour with the baking powder, allspice, cinnamon, nutmeg and salt.
Cream the butter and sugar. Beat in the eggs one by one, beating thoroughly after each addition. Fold the flour mixture into the batter in three batches alternating with t