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Spinach and Squash Sandwich

In the 19th century, a professor carrying out analyses of spinach samples had accidentally misplaced a decimal in his notation of the iron content. This mistake had drastic consequences. It was accepted that spinach leaves contained a much higher iron content than they truly did. French soldiers and nurses of World War I were instructed to feed their wounded a mixture of wine and spinach juice to supplement the iron loss of haemorrhaging. Furthermore, it's thought that the cartoon character Popeye's signature taste for canned spinach was inspired by its falsely high iron value.

Prep: 10 min | Cooking: 10 min | Total: 20 min

Makes 2 sandwiches


  • Olive oil (1 tbsp)

  • Onions, diced (1/2 cup)

  • Squash, sliced (2 cups)

  • Salt & Pepper (to taste)

  • French baguette, halved (one foot-long baguette)

  • Fresh spinach leaves (1/2 cup, packed)

  • Avocados, sliced (one avocado)


  1. Heat oil on a skillet on medium-high heat. Fry onions and squash for about 10 minutes or until tender. Season with salt and pepper and remove from heat.

  2. Cut into each half baguette so that just one lengthwise side is connected (or just slice through all the way). On one half, spread spinach and avocados; on the other, spread squash-onion mix. Connect halves and serve.

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