Beat the egg whites until stiff, mix the remaining ingredients quickly. Fold in the egg whites. Grease the 26 cm diameter cake pan or loaf pan or muffin cups, sprinkle with breadcrumbs, pour in the batter. Bake at 175 ° C top / bottom heat for approx. 45-50 minutes (cakes) or 25-30 minutes (muffins). Make a chopstick test.