Plum Muffins

2 cups all-purpose flour

1 cup white sugar

2 teaspoons baking powder

1 teaspoon baking soda

1/4 teaspoon ground nutmeg

1/2 teaspoon ground ginger

1/2 teaspoon salt

2 large eggs

1/2 cup milk

1/4 teaspoon almond extract

1/2 cup melted unsalted butter

2 cups chopped plums

1/3 cup lightly toasted chopped almonds

3 tablespoons minced candied ginger (optional)