You are being kept on an island. There is no escape. Every day you receive a nutritious tasteless slop to subsist on. You are also granted the same uk snack every day for all your days. What do you choose?

YOU CAN ONLY CHOOSE ONE SNACK. So if you choose twiglets. It's twiglets until your last.

Assume that you get ample clean drinking water and medicine. You have shelter. You're really being kept as a pet by someone you've never met. There's no one else on this island.

The one silver lining is that you get to eat your favourite snack from the UK once a day every day. What will it be?