The lunches tended to have a more educational component, so for instance at Jaleo, the outpost of superstar Spanish chef Jose Andres, he demonstrated how to make paella, the centerpiece of the meal, over the only wood burning restaurant paella grill in the nation.

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They still have to use wood stoves in the mornings, but lunch is cooked using solar, as is the evening meal, which is kept warm in insulated baskets until it's needed.

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