What should I do with a gigantic head of cabbage?

Our friends are shutting down their restaurant this week and yesterday they gave us their left over food resources. We have enough veggies and meats and noodles for 70 meals, including a huge head of cabbage. My dad suggested throwing it out but I’m hoping it can be used in a soup or smoothie.

What should I do with a gigantic head of cabbage?
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