School meals, which decade are we time travelling to?

I've built a time machine but unfortunately it only takes you to school canteens. Which decade shall I set the dials to and take you back for lunch?
School meals, which decade are we time travelling to?
40s. Spam mash and peas. Rice pudding
50s. Mince, peas, potatoes. Jam rolypoly
60s Hotpot and swede. Pudding and custard
70s Fish and chips. Jelly and ice cream
80s turkey twizzlers, potato faces and beans. Sponge cake and custard
90s pizza slice and chips. Artic roll
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School meals, which decade are we time travelling to?
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