Fetching details from the dictionary...
chewiness; firmness; feel of food while being chewed
challenge (e.g. work, book); toughness
この肉は歯応えがちょうどいい。
This meat has just the right chewiness.
歯応えのある食感が好きな人に向いている料理だ。
This is a dish suited to people who like a firm texture.
しっかりした歯応えが残るよう、パスタはアルデンテに仕上げた。
I cooked the pasta al dente so that a firm bite remains.