Introducing Killer Kustard Strawberry! Everything known about Killer Kustard has been brought to a whole new level. Killer Kustard has joined forces with Slayer Strawberry and they are ready to knock your taste buds out. They have united to bring together the flavors of rich vanilla custard and a sweet kick of juicy strawberries. Killer Kustard Strawberry will give a one-two punch that will charm you with each hit. Be sure to always keep a bottle on hand.