Bread rolls are most commonly round in shape and may be crusty or soft. Cradle cap causes crusty or oily scaly patches on a baby's scalp. The remaining mash is cooked until a crusty sediment forms. The San Francisco Bay Area is known for its crusty sourdough. He makes friends with Crusty, a misanthropic hermit crab. The resulting mash is then pressed and rounded into a hollowed crusty orb. Many "speciality", "crusty", and organic breads are produced this way. The scalp also develops a crusty substance. Local treatment with iodine compounds is time-consuming, as it needs scraping of crusty lesions. It has a crusty exterior, but is soft inside. And yet we can't help but love this crusty old magician all the same. They may open when scratched and become infected and crusty. Peter Mountain, his sadomasochistic girlfriend, Crusty, and her depraved man-child brother, Maggot. The television Doc, though still crusty, was in many ways softer and warmer. Crusty buildup from excess tears may also be present.