A slice of pound cake is buttery, rich and delicious all by itself, but it takes well to additions, too. Vary this cake's flavor by omitting the almond extract and stirring in 1 tsp. finely grated lemon zest, 2 Tbs. fresh lemon juice and 1 Tbs. poppy seeds, or 2 Tbs. minced crystallized ginger. If you like almond, add the optional almond extract and sprinkle sliced almonds on top before baking. You can also top the slices with fresh fruit.