Steamed Fish with Black Bean Sauce

INGREDIENTS

• 4 thick fish fillets (about 1.25" thick)
• sea salt
• freshly ground black pepper
• 4 tablespoons Chinese salted black bean paste, mixed with a little sake
• 8 tablespoons sake (Japanese rice alcohol)
• thumb-sized piece of fresh ginger, peeled
• 1 bunch fresh chives, cut into 1 1/2-inch lengths
• 6 tablespoons olive oil
• 2 teaspoons sesame oil