Chinese Hot Pot

Ingredients

• 1 small yellow onion, chopped
• 1 large carrot, halved lengthwise and thinly sliced on a diagonal
• 1 celery stalk, thinly sliced on a diagonal
• 6 -oz. can sliced water chestnuts, drained
• 2 garlic cloves, finely minced
• 1 tsp. peeled and grated fresh ginger
• 1/4 tsp. red pepper flakes
• 5 1/2 cups vegetable stock
• 1 Tbsp. tamari or other soy sauce
• 8 oz. extra-firm tofu, drained and diced
• 4 oz. fresh shiitake mushrooms, stemmed and caps thinly sliced
• 1 oz. snow peas, strings trimmed and cut into 1-inch pieces
• 3 scallions, chopped
• 1/2 tsp. toasted sesame oil or Chinese hot oil