crusty 
/ˈkrʌsti/ adjective
crust·i·er; crust·i·est /ˈkrʌsti/ adjective 1 : harsh and unfriendly
▪ a crusty old man ◊A crusty person often seems unfriendly at first but is really kinder and more caring than he or she seems. Crusty is usually used to describe old people. 2 of food : having a thick or crisp crust
▪ a basket of warm, crusty bread 3 : having a crust : having a hard surface layer
▪ We could see deer tracks in the crusty snow bank.
▪ a crusty old man ◊A crusty person often seems unfriendly at first but is really kinder and more caring than he or she seems. Crusty is usually used to describe old people.
▪ a basket of warm, crusty bread
▪ We could see deer tracks in the crusty snow bank.
— crust·i·ness noun [noncount]
