What is a sponge stick?

Sponge sticks (also sponge drops or lady fingers) are light, airy sponge finger biscuits. They are typically elongated and have a soft texture. They can be used in a variety of desserts, such as tiramisu, fruit salad and ice cream. They originated in Italy, where they are known as savoiardi. There are many variations on the recipe, but they are typically made with flour, sugar, eggs and butter.