Arugula Steak Salad

Ingredients

• 9 oz beef steak (such as fillet or sirloin, about 250 grams,)
• ½ teaspoon salt
• ¼ teaspoon pepper
• 0.5 tablespoon olive oil
• 2 teaspoons butter
• 2 cloves of garlic
• ⅔ cup grated Parmesan cheese
• ½ red onion (thinly sliced into half-moons)
• 3 oz fresh arugula (90 grams rocket, about 4 cups)
• Zest of ½ lemon
• Juice of ½ lemon
• 2 tablespoons olive oil
• 1 tablespoon honey
• 1 teaspoon mild mustard
• 1 teaspoon miso paste (if not available, add ¼ teaspoon salt)