How to distribute vanilla and citrus zest in cake batter
Put vanilla into an ingredient that mixes easily, and rub zest into sugar where its oils can be captured.
Set aside the sugar that belongs to the recipe before you zest the fruit. Wash and dry the lemon or orange and grate only its colored surface over the sugar. Turn the fruit to a fresh section whenever the white pith appears. Small pieces of colored peel disperse more evenly through a sponge than long threads.
Rub the zest and sugar between your fingertips for a few moments. The crystals will pick up color and the bowl will smell more strongly of citrus. Use this sugar at the usual point in the method. For a creamed cake, for example, beat it into the softened butter.
Add measured vanilla extract when the recipe calls for it. If it gives no timing, stir the extract into a liquid that will go into the batter, such as the beaten egg or milk. Scrape the measuring spoon into that liquid so the whole dose makes it into the bowl.
