Pre-heat oven to 325°F.
Grease a 9 x 13-inch baking pan and line it with parchment paper.
Using a saucepan, add the water and raisins.
Bring to a gentle boil and simmer for 10 minutes.
Add the shortening to the boiled mixture.
Allow the mixture to cool to room temperature.
In a bowl, sift together the sugar, soda, flour, cloves, cinnamon, nutmeg, allspice and salt.
Add the sifted ingredients to the cooled raisin mixture, along with the beaten egg and the nuts, if you are adding them.
Fold gently until the flour is just incorporated into the batter; do not over mix.
Turn into the prepared pans and bake for 30 - 35 minutes or until a wooden toothpick inserted into the center comes out clean.
Cool completely and ice with frosting, if you like.