Tuna Chunks with a Little Sunflower Oil. Introducing No Drain ECOTWIST multipack our most eco-friendly, faff free option yet! Featuring an aluminum SmartStrip, it's easy to open with a simple twist. Fully recyclable, it eliminates messy plastic waste. The new can has improved the quality of the tuna keeping it chunky and as succulent as ever. New can, Same No Drain.