STORE › Stockleys: Rhubarb & Custard Image 1 of 1 Stockleys: Rhubarb & Custard US$0.00 Creamy custard and sharp rhubarb flavour hard-boiled sweets with crystallised sugar shells. Quantity: Add To Cart Added! Creamy custard and sharp rhubarb flavour hard-boiled sweets with crystallised sugar shells.