Stir-Fried Kale

Ingredients

• 1 tbsp extra-virgin olive oil
• 1 clove garlic (minced)
• 1 small onion (halved and sliced thin)
• 1 7-ounce can water chestnuts (drained and thinly sliced)
• 3 shittake mushrooms (sliced)
• 1 lb chopped kale
• 1 tsp mirin (or seasoned brown rice vinegar)
• 1 tsp tamari (or high quality soy sauce)
• freshly ground black pepper (to taste)