Bustling balls are sweets with a double character: crunchy on the outside, sour on the inside. The hard sugar shell cracks under your teeth and then releases a distinctly sour centre, creating a surprising contrast within a single sweet.
They come in a mix of four different flavours, so every sweet from the bag brings a different moment. Bustling balls are especially popular with anyone who loves a proper sour kick, and they're a firm favourite with children who turn it into a game of guessing which flavour they've picked.
