Rusk biscuits are a type of dry, crunchy baked snack made by baking bread twice until it becomes crisp and golden. They are lightly sweet, firm in texture, and have a satisfying crunch. Rusks are commonly enjoyed as a tea-time snack, especially in South Asian households, where they are often dipped into hot tea or coffee to soften slightly before eating. They can be plain or flavored with ingredients like cardamom, milk, butter, or nuts, giving them a rich and comforting taste.