– 8 seeded and medium diced Roma tomatoes – 1 peeled and small diced sweet onion – ¼ cup chopped fresh cilantro – juice of 1 lemon – ¼ head of green or red cabbage cored and thinly sliced – 2 pounds fresh halibut cut into smaller fillets – 1 cup cornstarch – 1 cup all-purpose flour – 12 ounces Mexican beer – 16 corn tortillas heated – sea salt and pepper to taste – oil for cooking