Boil up the water, and use it to brew a strong tea. Once the tea is nice and strong, remove the tea bags and add the raisins. Now let them steep for about 8 hours or so.
Preheat oven to 350°F.
Get out a loaf pan and butter it. Line the bottom with a piece of parchment paper cut to size, and butter it, too.
Stir the sugar, egg, and spices into the raisin tea mixture.
In a separate bowl, whisk together the flour, salt, and baking powder.
Carefully fold the flour mixture into the raisin mixture.
Pop it into the oven and bake for about 90 minutes, or until a skewer, toothpick, or knife inserted into the center comes out dry.
Let it rest right in the pan for about 20 minutes, then turn it out onto a rack and let it cool further.