I first tried these in January 2005. They are very moist and delicious!
A properly baked loaf emerges with a dark, crackled crust and an interior crumb that holds together under pressure without feeling heavy. Achieving this structure requires careful management of the moisture released by grated summer squash. Leaving the skin intact provides color flecks and structural integrity, but excess liquid can swamp the batter. Sifting the dry ingredients together ensures the baking soda and baking powder distribute evenly with the cinnamon and flour, preventing pockets of unreacted leavener.
Substitutions demand caution here. Reducing the sugar alters more than sweetness; sugar acts as a tenderizer by retaining moisture in quick breads, so cutting it drastically results in a tough, rubbery texture. Similarly, swapping the vegetable oil for melted butter changes the fat-to-water ratio and yields a denser, less compressible crumb. Standard loaf pans measuring 9x5x3 inches must be greased and floured thoroughly to prevent sticking, as the high sugar content creates a strong adhesive bond during the one-hour bake at 350 degrees Fahrenheit.
Allowing the loaves to rest in their pans for 30 minutes on a wire rack lets the internal structure set before handling. Chilling the wrapped loaves in the refrigerator for several hours solidifies the fats and starches, producing clean, uniform slices that do not crumble.