The design is an outer bowl with an inner, removable colander or strainer basket. The word colander comes from the Latin "colum" meaning "sieve". Soak the beans in water for about 8 hours then place in the colander. After the tapioca pearls are cooked, they should be strained through a colander. The "Drain" step shows a colander being used. Each chicken was pressed in a colander to ensure that all the liquid was expressed.