crisping

(verb) make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in. Synonyms: wrinkle, ruckle, crease, crinkle, scrunch, scrunch up, crisp. Examples: "The dress got wrinkled." "Crease the paper like this to make a crane."

(verb) make brown and crisp by heating. Synonyms: crispen, toast, crisp. Examples: "Toast bread." "Crisp potatoes."